Using the quadratic formula to solve equations may bring one, two, or no algebraic solutions. The quadratic formula is special to quadratic equations, which can have fractions, radicals, or neverending decimals. Learn how to solve quadratic equations using the quadratic formula with this free video algebra lesson. 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 Percent Given Two Numbers

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How To: Find the area of a circle when you know the diameter

How To: Find a slope of a straight line with: Ax + By + C = 0

How To: Find a number given Its percent

How To: Convert between diameter and radius

How To: Do long division without a calculator

How To: Divide small numbers by big numbers

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How To: Subtract a mixed number from a proper fraction in basic math

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How To: Calculate the height and volume of a pyramid

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