Watch this example of muliplying rational expressions, simplifying the solution (writing it in lowest terms), and determining the domain of the solution.
Example Problem - Multiplying Rational Expressions is a free educational video by Khan Academy.It helps students in grades 9,10,11,12 practice the following standards HSA.APR.D.7.
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1. HSA.APR.D.7 : Understand that rational expressions form a system analogous to the rational numbers, closed under addition, subtraction, multiplication, and division by a nonzero rational expression; add, subtract, multiply, and divide rational expressions.