simplify the expression 13x2y-9x2y

The 2's are suppost to be squard

asked Aug 13, 2015 in Algebra 2 Answers by anonymous

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13x^2y-9x^2y=13(x^2y)-9(x^2y)=4x^2y.

answered Aug 14, 2015 by Rod Top Rated User (442,220 points)

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