(x^3-7x^2+3x+11)(2x^4-13x^3+5x^2+3x-10) 展开,
问题描述：
(x^3-7x^2+3x+11)(2x^4-13x^3+5x^2+3x-10) 展开,
答
(x^3-7x^2+3x+11)(2x^4-13x^3+5x^2+3x-10)=2x^7-13x^6+5x^5+3x^4-10x^3-14x^6+91x^5-35x^4-21x^3+70x^2+6x^5-39x^4+15x^3+9x^2-30x+22x^4-143x^3+55x^2+33x-110=2x^7-27x^6+102x^5-49x^4-159x^3+134x^2+3x-110辛苦答...