证明(8-7x-6x²+x³)+(x³+5x²+4x-1)-(-x²-3x+2x³-3)的值与x无关

问题描述:

证明(8-7x-6x²+x³)+(x³+5x²+4x-1)-(-x²-3x+2x³-3)的值与x无关

(8-7x-6x²+x³)+(x³+5x²+4x-1)-(-x²-3x+2x³-3)
=8-7x-6x²+x³ + x³+5x²+4x-1 +x²+3x-2x³+3
=8-1 +3
=10