因式分解,快急!在线等!
1,-x²+4x+122,-x³-x²+2x3,a²-3ab-4b²4,x³-5x²-36x5,(x...
1,-x²+4x+12
2,-x³-x²+2x
3,a²-3ab-4b²
4,x³-5x²-36x
5,(x-y)²+(x-y)-2 展开
2,-x³-x²+2x
3,a²-3ab-4b²
4,x³-5x²-36x
5,(x-y)²+(x-y)-2 展开
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