测式数据.txt

一多项式求值,求导,减法,乘法,加法. 输出形式为类数学表达式, 指数升序排列.

测式数据
(1)  x=2; x+x^2+x^3=14_
(2)  (2x+5x^8-3.1x^11)+(7-5x^8+11x^9)=7+2x+11x^9-3.1x^11
(3)  (6x^(-3)-x+4.4x^2-1.2x^9)-(-6x^(-3)+5.4x^2-x^2+7.8x^15)
        =-x+12x^(-3)-1.2x^9-7.8x^15
(4)  (x+x^2)×(1+x+x^2)=x+2x^2+2x^3+x^4
(5) （9+x+x^4+2x^6）’=1+2x^3+12x^5