提公因式法因式分解:3(y-x)²+2(x-y)
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提公因式法因式分解:3(y-x)²+2(x-y)
提公因式法因式分解:3(y-x)²+2(x-y)
提公因式法因式分解:3(y-x)²+2(x-y)
3(y-x)²+2(x-y)
=3(x-y)²+2(x-y)
=(x-y)[3(x-y)+2]
=(x-y)(3x-3y+2)
原式=3(x-y)²+2(x-y)
=(x-y)[3(x-y)+2]
=(x-y)(3x-3y+2)
3(y-x)²+2(x-y)
=(3x-3y+2)(x-y)