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 the quadratic formula on your graphing calculator.
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How To: Remember "greater than" & "less than" symbols

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How To: Calculate Faster Than a Calculator

How To: Find the area of a parallelogram using geometry

How To: Find the Slope Given 2 Ordered Pairs

How To: Identify characteristics of a sample during a survey

How To: Find the Percent Given Two Numbers

How To: Calculate percent composition for chemistry

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How To: Find the x & y intercepts of rational functions

How To: Find the value of a variable in an algebraic equation

How To: Calculate probability in "at least one" problems

How To: Interpret a standard deviation

How To: Solve problems involving deductive reasoning

How To: Find the vertices of a polygon of constraints

How To: Compute a square root using the geometric method

How To: Solve a 3x3 linear system using Cramer's Rule

How To: Do long division without a calculator

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

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

How To: Find the slope of a line given 2 points with fractions

How To: Write a slopeintercept equation given an XY table

How To: Calculate Faster Than a Calculator

How To: Find the area of a parallelogram using geometry

How To: Find the Slope Given 2 Ordered Pairs

How To: Identify characteristics of a sample during a survey

How To: Find the Percent Given Two Numbers

How To: Calculate percent composition for chemistry

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

How To: Find the x & y intercepts of rational functions

How To: Find the value of a variable in an algebraic equation

How To: Calculate probability in "at least one" problems

How To: Interpret a standard deviation

How To: Solve problems involving deductive reasoning

How To: Find the vertices of a polygon of constraints

How To: Compute a square root using the geometric method

How To: Solve a 3x3 linear system using Cramer's Rule

How To: Do long division without a calculator
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