(2x-1)^2-6(2x-1)+9 x^3y^3-2x^2y^2+xy (2x-1)^2-6(2x-1)+9x^3y^3-2x^_数学解答

(2x-1)^2-6(2x-1)+9 x^3y^3-2x^2y^2+xy
(2x-1)^2-6(2x-1)+9
x^3y^3-2x^2y^2+xy

人气：231 ℃　时间：2020-02-06 01:43:27

解答

(2x-1)^2-6(2x-1)+9
=(2x-1-3)^2
=(2x-4)^2
=4(x-2)^2
x^3y^3-2x^2y^2+xy
=xy(x^2y^2-2xy+1)
=xy(xy-1)^2