(2x-3)(2x+3) (3x-1)^2 (-2X)(3X^2-2X+1) (2X-3)(3X+2) (X-2)(X+2)(X^2+4) 1.(2x-3)(2x+3)2.(3x-1)^2 3.(-2X)(3X^2-2X+1)4.(2X-3)(3X+2)5.(X-2)(X+2)(X^2+4) 6.(X+1)^2(X-1)7.先化简再求值:(X-1)(3X+1)-(X+1)^2,其中X=-1

问题描述:

(2x-3)(2x+3) (3x-1)^2 (-2X)(3X^2-2X+1) (2X-3)(3X+2) (X-2)(X+2)(X^2+4)
1.(2x-3)(2x+3)
2.(3x-1)^2
3.(-2X)(3X^2-2X+1)
4.(2X-3)(3X+2)
5.(X-2)(X+2)(X^2+4)
6.(X+1)^2(X-1)
7.先化简再求值:(X-1)(3X+1)-(X+1)^2,其中X=-1