数学(实数)

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

1.(x-y+2)(x-y-3)
2.2(x-y+√3y)(x-y-√3y)
注释：
2题中的根号3y中的y不包含在根号中~~

(1)原式=(x-y)^2-(x-y)-6
=(x-y-3)(x-y+2)
(2)你有没有抄错？

居然有人回答！我看见数学就头疼。哈哈

(1)(x-y-3)(x-y+2)
(

(1)(x-y-3)(x-y+2)
(2)2(x-y+√3y)(x-y-√3y)