Question

qual o valor da expressão (x+2)^3

Answer 1

(x+2)^3 = (x+2)^2(x+2)

(x^2 + 4x + 4)(x+2) = x^3 + 4x^2 + 4x + 2x^2 + 8x + 8

x^3 + 6x^2 + 12x + 8
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(x+2)^3 = x^3 + 3.2.x^2 + 3.2^2.x + 2^3 ==> x^3 + 6x^2 + 12x + 8