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 unpack and solve word problems that require you to apply quadratic functions in algebra.
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How To: Remember "greater than" & "less than" symbols

How To: Calculate Faster Than a Calculator

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

How To: Solve equations with the order of operations

How To: Prove a triangle inscribed in a circle is right angled

How To: Do long division without a calculator

How To: Find the area & perimeter of triangles & squares

How To: Calculate percent composition for chemistry

How To: Find a number given Its percent

How To: Find the area of a triangle when given 2 sides & angle

How To: Find a data point (Xi) with the ZScore formula

How To: Evaluate square roots

How To: Calculate the area of a triangle using a basic formula

How To: Add consecutive odd numbers

How To: Find the standard deviation with the ZScore formula

How To: Determine the age of a fossil using carbon14

How To: Find outliers using the Zscore method

How To: Convert Fahrenheit to Celsius with a formula

How To: Estimate probabilities with the empirical rule

How To: Find the equation of a circle given: center & tangent

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

How To: Calculate Faster Than a Calculator

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

How To: Solve equations with the order of operations

How To: Prove a triangle inscribed in a circle is right angled

How To: Do long division without a calculator

How To: Find the area & perimeter of triangles & squares

How To: Calculate percent composition for chemistry

How To: Find a number given Its percent

How To: Find the area of a triangle when given 2 sides & angle

How To: Find a data point (Xi) with the ZScore formula

How To: Evaluate square roots

How To: Calculate the area of a triangle using a basic formula

How To: Add consecutive odd numbers

How To: Find the standard deviation with the ZScore formula

How To: Determine the age of a fossil using carbon14

How To: Find outliers using the Zscore method

How To: Convert Fahrenheit to Celsius with a formula

How To: Estimate probabilities with the empirical rule

How To: Find the equation of a circle given: center & tangent
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