2(x+y)(x-y)-6(x-y)^2因式分解
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2(x+y)(x-y)-6(x-y)^2因式分解2(x+y)(x-y)-6(x-y)^2因式分解2(x+y)(x-y)-6(x-y)^2因式分解=(x-y)(2x+2y-6x+6y)=4(x-y)(2
2(x+y)(x-y)-6(x-y)^2因式分解
2(x+y)(x-y)-6(x-y)^2因式分解
2(x+y)(x-y)-6(x-y)^2因式分解
=(x-y)(2x+2y-6x+6y)
=4(x-y)(2y-x)