(3x-2y)(y-3x)-(2x-y)(3x+y)得多少要过程

2025-04-01 01:12:39
推荐回答(1个)
回答1:

(3x-2y)(y-3x)-(2x-y)(3x+y)
=9xy-2y^2-9x^2-(6x^2-xy-y^2)
=10xy-y^2-15x^2