25(x+y)^2-9(x-y)^2 因式分解详细过程

2025-06-27 09:17:51
推荐回答(1个)
回答1:

25(x+y)^2-9(x-y)^2
=25(x^2+2xy+y^2)-9(x^2-2xy+y^2)
=16x^2+32xy+16y^2
=16(x^2+2xy+y^2)
=16(x+y)^2