Extended Term Search Results

How To: Complete the square

Quadratic equations are easy to solve when they can be factorized. This video teaches another method of solving a quadratic equation when its not easy to find factors for it.

How To: Maintain your tools for extended usage

In this tutorial, we learn how to maintain your tools for extended usage. First, get a good sturdy brush to clean off all the crusted on dirt from your tool. The dirt will promote rust and deteriorate your tools. Once it's cleaned, also make sure it's dried off from anything that is wet. Also set the tool on a flat surface or table to remove rust off of the tool. You can also sharpen the sides of the tools or shovels so you are pulling out any kinks and making it sharp and more useful. Once f...

How To: Factor out when doing rational expressions in algebra

This video shows the method to simplify rational expressions. The example used in the video is multiple of 4 and x square plus multiple of 4 and x plus 1 or (4x^2 + 4x + 1)/(2x^3 + 11x^2 + 5x). As the first and last term is a perfect square we get the simplified numerator as (2x + 1)(2x + 1). Next, the denominator is simplified. Taking the common factor out we get x(2x^2 + 11x + 5). Now we factorize 2x^2 + 11x + 5. We get (2x + 1)(x + 5 ). Now, writing the terms in numerator and denominator w...

How To: Draw a 3d staircase

This wordless video shows how to draw a staircase in 3d. Start by drawing the steps in one dimension. Extend two lines at the top of the stairs the width you want the steps to be. Draw another line between them to make a square. This creates a landing. Draw two lines downward and parallel to the steps from the line at the top of the stairs. This will create a rail and a second base. Then extend lines from each jut of the one dimensional steps, stretching the lines alternately to the base and ...

How To: Solve exponential and logarithmic equations

In this video tutorial the instructor shows how to solve exponential and logarithmic equations. Solving exponential equations can become very difficult if it involves large numbers. To solve these kinds of complex equations you need to get all the numbers to the same base number. The base number raised to some number should give you your original number. Now if you write the numbers as exponents of your base number you can directly equate the exponent part and solve for the missing variable. ...

How To: Factor a trinomial, GCF, then unfoil

In this video the instructor shows how to factor a polynomial. A polynomial having three terms is called as trinomial. Now if you factor it you will obtain two binomials whose product will be the original polynomial. Before factoring a polynomial you need to find out if the polynomial has a GCF. Look out for the common variables in all the three terms and pull them out which is the GCF of the polynomial. This simplifies the original equation to a polynomial which is of lower degree. Now facto...

How To: Graph quadratic equations

In this video, the instructor shows you how to graph quadratic equations. When you have a quadratic equation in terms of x and y, first try to identify the coefficients of the terms. Now use front end of the quadratic formula to find the line of symmetry which is the first half of the vertex using the formula x = -b/2a. This gives the line of symmetry. Next, plot the line using a few points starting at the line of symmetry. Take sample values of x and find the corresponding values of y on eit...

How To: Solve word problems with proportions

In this video the instructor shows how to use proportions to solve fractions. When you have a proportions problem with an unknown term, cross multiply and divide it to get the value of that unknown term. For example if given 7/8 = m/4, cross multiply 7/8 with 4, giving 7/2 which is the value of the unknown variable m. So if two quantities are proportionate then you can equate them as shown in the video and cross multiply to get the value of any unknown variable. Proportions are just fractions...

How To: Factor trinomials in a very simple way

In this video, they demonstrate how to factor a trinomial. A trinomial is a polynomial with a quadratic term in the form, ax^2+bx+c. To factor this polynomial first multiply the a and c term. You must fine two numbers that multiply to a*c and add up to b. Once you have figured out the two numbers you place the two numbers (D and E for example) in the equation (1/a)(ax+D)(ax+E). It takes a bit of practice to be good at deciding what D and E are, but the best way is to make sure that D*E = a*c ...

How To: Solve percent equations

In this tutorial the instructor shows how to solve percent equations. The general form of a percent equations is that a is b% of c. As there can be three kinds of variables a, b, c, the questions involving percent equations can be of three types having one of the three variables unknown. These kind of percent statements can be solved easily by setting up an equation. So, to convert percent statement into a equation replace the unknown term with n, the 'is' term with equals sign and the '%' si...

How To: Solve rational equations

In this video the instructor shows how to solve rational equations. If you have fractions in your equation, then you need to factorize the denominators first. Now compute the least common denominator of all the denominators of the fraction. Next multiply both sides of the equation with the least common denominator. This cancels out all the denominators of all the fractions and you are left with a linear equation. Now simply multiply the remaining terms in the numerator and add common terms to...

How To: Get six pack abs with cardio & strength training

In this video, Yuri Elkaim will teach you how to get six pack abs using cardio and strength training. He breaks down the discussion of cardio vs. strength training for burning fat and building muscle. In the video, Elkaim stresses high-intensity interval training (HIIT), in which he says you will burn more calories, and therefore lose more fat if that is your aim. Furthermore, working at a higher intensity for longer periods of time increases your cardiovascular strength to an even higher deg...

How To: Find the equation of a circle given: center & tangent

In this video, the instructor shows how to find the equation of a circle given its center point and a tangent line to it. To do this, take a graph and plot the given point and the tangent on that graph. Now, from the center of the circle, measure the perpendicular distance to the tangent line. This gives us the radius of the circle. Using the center point and the radius, you can find the equation of the circle using the general circle formula (x-h)*(x-h) + (y-k)*(y-k) = r*r, where (h,k) is th...

How To: Divide rational expressions

In this video the instructor shows how to divide rational expressions. To divide rational expressions follow this simple four step approach. In the fist step change the division to multiplication by flipping the second fraction. Now the original division simplifies to multiplication. In the second step factor the terms of numerators and denominators in the two fractions. In the third step cancel the common terms in the numerator and the denominator. Now finally in the fourth step multiply all...

How To: Prove some random trigonometric identities

This video shows the method to prove some trigonometric identities. This involves the use of algebra and knowledge of basic trigonometric identities. The video demonstrates three examples to illustrate this problem and its solution. The first problem shows a relatively simple problem involving sines and cosines. The video shows some basic algebra steps to simplify the problem and prove the identities. The second example involves a slightly complicated problem involving square of combination o...

How To: Add & subtract fractions

This is a video that teaches how to add and subtract fractions. For fractions that have like denominators, you simply add the numerator and keep the denominator. Next, you reduce the fraction to its lowest term.

How To: Solve an equation by the distributive property

In this simple tutorial the tutor shows how to solve equation by the distributive property. He states that when there is a number which is multiplied to a full equation, we have to multiply each and every term of that equation by that multiplying number. This is called the distributive property as the value is distributed to each and every term inside the equation. He goes on and solves a problem based on this property to give a clear idea of the property. This video shows how to solve equati...

How To: Improve your memory using grouping techniques

This video describes how to improve one's memory by using a grouping technique. First you break up large chunks of information into smaller chunks and then you focus and concentrate on memorizing those smaller chunks one at a time. The video then describes how short term memory work on the anatomical level. This video is about four minutes long and will help you improve your short term memory. This video is great for those who are generally forgetful.

How To: Divide similar radicals

While dividing the radicals, the numerator and the denominator must be combined into a single term, for example if we want to divide square root of 3 by square root of seven we need to combine the numerator and denominator into a single factor that is square root of 3/7, then we can divide 3/7 which is 0.4285, and square root of 0.4285 is 0.654 which is the final answer.

How To: Understand Tagalog grammar terms

This how to video describes how to understand and use Tagalog grammar terms properly. The author suggests reading the book "Conversational Tagalog" to help increase your basic understanding of the language. He then covers the use of verbs and other grammatical devices in the Tagalog language. This video is perfect for those who are studying the Tagalog language or for those who need a quick refresher. The video lasts about eight and a half minuets and leaves you with a better understanding of...

How To: Set up automatic brightness on a Blackberry

Austin from 'Best Buy Tips and Tricks' give out a mobile tip on how to extend the battery life of your Blackberry by using the Blackberry's built-in function called the automatic black light dimmer. This function changes the brightness of the back light automatically depending on the light intensity of the environment you use the phone. Activate this function as shown in the video so that your phone changes the brightness of your Blackberry screen to an optimal level depending on the environm...

How To: Do a heelflip on a skateboard

Heel flip is a skateboard trick similar to a Kick flip. Get expert tips and advice on skateboard decks and trucks in this video tutorial. Take action: know how to do an ollie, know how to do a kickflip, do an ollie, extend lead foot past front of board, and once in the air, extend front foot to flip board land cleanly. Shawn, the instructor in this how-to video from Live Strong, has over twenty years of skateboarding knowledge. He has appeared in Slap, Thrasher and Transworld magazines and hi...

How To: Extend a background in Photoshop

All of us know by now that the pictures you see of actresses and models in magazines have been doctored beyond belief. After the initial photo shoot, retouchers quickly work their magic with thigh chub resizing (only in Photoshop do women not have cellulite), wrinkle reducing, and skin spot removing.

How To: Overcome Anxiety with Supplements

There has been a huge shift over recent years to alternative medicine as people get disillusioned with conventional medicine to overcome anxiety. Natural and herbal supplements are becoming popular as people re-engage with nature. The list of potential side effects from drugs and the rebound effects from withdrawing often make the thought of taking medication unpleasant. Often the promise of how effective the medication can be is exaggerated or it simply does not have the effect it should bec...

How To: Clean and Maintain Your Tape Measure

Recently I was working outside forming a driveway in the rain. Working in and around the wet sand was not friendly on my tools, especially my tape measure. About halfway through the day my tape measure would need "encouragement" in order to retract to the closed postion. Not too much later, with force applied, it would remain standing out at 1ft. and the problem progressively got worse.