Question

a^2-b^2/a^3-b^3

Answer 1

a^3-b^3-a^2+b^2
=(a^3-b^3)-(a^2-b^2)
=(a-b)(a^2+ab+b^2)-(a-b)(a+b)
=(a-b)(a^2+ab+b^2-a-b);

Answer 2

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