(x+1)^3+(x-1)^2=x^3+3x^2+3x+1+x^2-2x-1=x^3+4x^2+x
f(-2)=-8+16-2=6
(x+1)^3+(x-1)^2 = x^3 + 3x^2 + 3x + 1 - x^2 - 2x + 1 = x^3 + 2x^2 + x + 2
x^3 + 2x^2 + x + 2 =(-2)^3 + 2*(-2)^2 + (-2) + 2 = -8 + 8 - 2 + 2 = 0
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(x+1)^3+(x-1)^2=x^3+3x^2+3x+1+x^2-2x-1=x^3+4x^2+x
f(-2)=-8+16-2=6
(x+1)^3+(x-1)^2 = x^3 + 3x^2 + 3x + 1 - x^2 - 2x + 1 = x^3 + 2x^2 + x + 2
x^3 + 2x^2 + x + 2 =(-2)^3 + 2*(-2)^2 + (-2) + 2 = -8 + 8 - 2 + 2 = 0