Toán Lớp 8: a) x^3 + 12x^2 + 48x + 64 b) x^3 - 6x^2 + 12x - 8 c) x^2 + 2x + 1

a) x^3+12x^2+48x+64 =x^3+3.x^2 .4+3.x.4^2+4^3 =(x+4)^3 b) x^3-6x^2+12x-8 =x^3-3.x^2 .2+3.x.2^2-2^3 =(x-2)^3 c) x^2+2x+1 =x^2+2.x.1+1^2 =(x+1)^2

Toán Lớp 8: `a) x^3 + 12x^2 + 48x + 64` `b) x^3 - 6x^2 + 12x

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