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

How To: Calculate Faster Than a Calculator

How To: Do long division without a calculator

How To: Convert between diameter and radius

How To: Find a number given Its percent

How To: Remember "greater than" & "less than" symbols

How To: Find the Height of a Trapezoid.

How To: Convert decimals into fractions

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Find the Percent Given Two Numbers

How To: Calculate percent composition for chemistry

How To: Calculate the area of a parallelogram

How To: Solve for the missing ratios or proportions

How To: Find outliers using the Zscore method

How To: Estimate probabilities with the empirical rule

How To: Write a sum/difference of logarithms as a logarithm

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How To: Write a logarithm as a sum or difference of logarithms

How To: Find least common multiple in rational expressions

How To: Find a slope of a line parallel/perpendicular to it
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