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 multiply (or divide) and express as a simplified rational, stating the domain.
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How To: Remember "greater than" & "less than" symbols

How To: Find the Percent Given Two Numbers

How To: Find and sketch the domain of a multivariable function

How To: Square expressions involving radicals

How To: Calculate Faster Than a Calculator

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

How To: Factor trinomials in a very simple way

How To: Graph an inequality in slopeintercept form

How To: Find the volume of a regular pyramid

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

How To: Find a number given Its percent

How To: Divide small numbers by big numbers

How To: Calculate the area of a parallelogram

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

How To: Translate a shape

How To: Learn Calculus in 20 minutes

How To: Find Leg Lengths and Hypotenuse of a 45 45 90 Triangle

How To: Find the equation of a line given 1 point

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

How To: Find the volume of a cone quickly
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