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 study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to work with radical algebraic equations.
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How To: Calculate Faster Than a Calculator

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

How To: Learn Calculus in 20 minutes

How To: Find the Percent Given Two Numbers

How To: Find a number given Its percent

How To: Find the area of a parallelogram using geometry

How To: Find a missing side of a triangle, similar to another

How To: Chart data with a box and whisker plot

How To: Do long division without a calculator

How To: Divide small numbers by big numbers

How To: Find the formula of a piecewise function given a graph

How To: Figure out the domain & range of a piecewise function

How To: Solve a line integral over a closed path

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

How To: Calculate the area of a parallelogram

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

How To: Calculate percent composition for chemistry

How To: Find the Slope Given 2 Ordered Pairs

How To: Find the slope from a set of points

How To: Solve equations with the order of operations
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