4x²-3y(4x-3y),2(x²-y²)+y-x 因式分解,
1个回答
1,=(2x)²-12xy+(3y)²=(2x-3y)²
2,=2(x²-y²)-(x-y)=2(x-y)(x+y)-(x-y)=(x-y)(2x+2y-1)
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