(x-x2)(x2+x-6)分之(x2+3x)(x2-3x+2)
问题描述:
(x-x2)(x2+x-6)分之(x2+3x)(x2-3x+2)
答
=x(x+3)(x-2)(x-1)/x(1-x)(x+3)(x-2)
=-1