Respuesta :
a) (a+b)2 = 2a+2b
b) (a+b)(a-b) = a^2-2ab+b^2
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c) (a-b)2 = 2a-2b
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d) (a+b)3 = a^3+3a^2b+3ab^2+b^3
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b) (a+b)(a-b) = a^2-2ab+b^2
_____________
c) (a-b)2 = 2a-2b
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d) (a+b)3 = a^3+3a^2b+3ab^2+b^3
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