x³y³-x²y²-xy+1
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x³y³-x²y²-xy+1x³y³-x²y²-xy+1x³y³-x²y²-xy
x³y³-x²y²-xy+1
x³y³-x²y²-xy+1
x³y³-x²y²-xy+1
x³y³-x²y²-xy+1 =x³y³-2x²y²+xy+x²y²-2xy+1 =xy*(x²y²-2xy+1)+(xy-1)² =xy*(xy-1)²+(xy-1)² =(xy+1)(xy-1)²
因式分解:x³+y³
(x+y)²-(x³+y³)÷(x+y)
x³y³-x²y²-xy+1
x³-x²y-xy²+y³(因式分解)
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