Question

(X+2)(x+2)(x+2) efetue

Answer 1

(x²+2x+2x+4)(x+2)=

(x²+4x+4)(x+2)=

x³+2x²+4x²+8x+4x+8=

x³+6x²+12x+8

Answer 2

$(x + 2)(x + 2)(x + 2) \\ \\ (x + 2)(x^2 + 2x + 2x + 4) \\ \\ (x + 2)(x^2 + 4x + 4) \\ \\ x^3 + 4x^2 + 4x + 2x^2 + 8x + 8 \\ \\ =\ \textgreater \ x^3 + 6x^2 + 12x + 8$