分解因式-4x³y²+28x²y-2xy
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分解因式-4x³y²+28x²y-2xy
原式=-2xy(2x²y-14x+1)
-4x³y²+28x²y-2xy
=-2xy(2x^2y-14x+1)
2xy(-2x^2y+14x-1)
=-2xy(2x^2y-14x+1)
分解因式-4x³y²+28x²y-2xy
原式=-2xy(2x²y-14x+1)
-4x³y²+28x²y-2xy
=-2xy(2x^2y-14x+1)
2xy(-2x^2y+14x-1)
=-2xy(2x^2y-14x+1)