Question

simplifique:
(A) (x+4)³
(B) (2-y)³

Answer 1

Resposta:

a)$x^{3}+8x^{2}+32x+64$

b)$-y^{3}+4y^{2}-8y+8$

Explicação passo-a-passo:

$(x+4)^{3}\\(x^{2}+4x+16).(x+4)\\x^{3}+4x^{2}+16x+4x^{2}+16x+64\\x^{3}+8x^{2}+32x+64$

$(2-y)^{3}\\(-y+2)^{3}\\(y^{2}-2y+4).(-y+2)\\-y^{3}+2y^{2}-4y+2y^{2}-4y+8\\-y^{3}+4y^{2}-8y+8$