Respuesta:
A(x+1)² = (x+1)(x+1)= x²+1x+1x+1=x²+2x+1
B(x+8)²= (x+8)(x+8)= x²+8x+8x+64=x²+16x+64
C(3x+5)²= 9x²+15x+15x+25=9x²+30x+25
D(6x-2)²=36x²-12x-12x+4=36x²-24x+4
E(9x-4)²=81x²-36x-36x+16=81x²-72x+16
F(x+9)(x-9)=x²-81
G(x+3)(x-3)=x²-9
H(7x+y)(7x-y)= 49x²-y²
I)(x+2)³=x³+6x²+12x+8
J(x-8)³= x³-24x²4192x-512
K(3x+1)³=27x³+27x²+9x+1
L(4x-2y)³=64x³-96x²y+48y²-8y³
