化简式子,(x + 1) × (x - 2) × (x - 3)

问题描述:

化简式子,(x + 1) × (x - 2) × (x - 3)
(x + 1) × (x - 2) × (x - 3)求化简

原式=(x^2 -x-2)(x-3)
=x^2 (x-3)-x(x-3)-2(x-3)
=x^3 -3x^2 -x^2 +3x-2x+6
=x^3 -4x^2 +x+6