Sometimes there's no better way to factor a quadratic equation than by simple bruteforce trial and error. Watch this free video algebra lesson to see how it's done. From Ramanujan to calculus cocreator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test).
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How To: Find the area & perimeter of triangles & squares

How To: Do long division without a calculator

How To: Divide small numbers by big numbers

How To: Solve temperature subtraction problems (integers)

How To: Do synthetic division in intermediate algebra

How To: Convert between diameter and radius

How To: Find extra points for a parabola (quadractic equation)

How To: Use a TI89 to calculate nCr

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How To: Do normal probability calculations on a calculator

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