求9-4x^2+12xy-9y^2因式分解

问题描述:

求9-4x^2+12xy-9y^2因式分解
最好有步骤.

9-4x^2+12xy-9y^2=9-(4x^2-12xy+9y^2)=9-(2x-3y)^2=[3+(2x-3y)][3-(2x-3y)]=(2x-3y+3)(3y-2x+3)
希望帮助到了你,