初中数学题整式的加减,(1)(3x+1)(x-2) (2)(x-8y)(x-y)(3)(x+y)² (4)(x+y)(x²y^4+y²) (5)(x-1)(x²+x+1)

问题描述:

初中数学题整式的加减,(1)(3x+1)(x-2) (2)(x-8y)(x-y)
(3)(x+y)² (4)(x+y)(x²y^4+y²) (5)(x-1)(x²+x+1)