December 2019 1 84 Report
A expressão : a^4 -b^4+2a^3b-2ab^3 é igual a:

a)(a-b)^3. (a+b)
b)(a^2+b^2)(a-b)^2
c)(a+b)^2 (a-b)^2
d)(a+b)^2 (a-b)^3
e)(a+b)^3 (a-b)
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