Answer to Question #287724 in Algebra for austyn

Question #287724

Find the value of the following expression for the given values.

n2−m2; n=−3, and m=-7

Expert's answer

"n^2-m^2=(-3)^2-(-7)^2=9-49=-40"

"n^2-m^2=(n-m)(n+m)"

"=(-3-(-7))(-3+(-7))=4(-10)=-40"

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