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). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to solve quadratic equations by applying the quadratic formula.
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How To: Remember "greater than" & "less than" symbols

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How To: Find the area of a parallelogram using geometry

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How To: Find the Slope Given 2 Ordered Pairs

How To: Calculate Faster Than a Calculator

How To: Calculate percent composition for chemistry

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

How To: Determine the age of a fossil using carbon14

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

How To: Write a slopeintercept equation given an XY table

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

How To: Multiply & Divide Numbers (Basic Elementary Math)

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

How To: Solve for the missing ratios or proportions

How To: Divide small numbers by big numbers

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

How To: Spend Money on a Graphing Calculator? Nah—Just Use This WebBased TI Emulator

How To: Find the Volume of Composite Figures (Also Called Composite Shapes)

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

How To: Find the Percent Given Two Numbers

How To: Learn Calculus in 20 minutes

How To: Find the area of a parallelogram using geometry

How To: Find a number given Its percent

How To: Find the Slope Given 2 Ordered Pairs

How To: Calculate Faster Than a Calculator

How To: Calculate percent composition for chemistry

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

How To: Determine the age of a fossil using carbon14

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

How To: Write a slopeintercept equation given an XY table

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

How To: Multiply & Divide Numbers (Basic Elementary Math)

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

How To: Solve for the missing ratios or proportions

How To: Divide small numbers by big numbers

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

How To: Spend Money on a Graphing Calculator? Nah—Just Use This WebBased TI Emulator

How To: Find the Volume of Composite Figures (Also Called Composite Shapes)
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