因式分解:x³y³-x²y²-xy+1
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因式分解:x³y³-x²y²-xy+1
因式分解:x³y³-x²y²-xy+1
因式分解:x³y³-x²y²-xy+1
x³y³-x²y²-xy+1
=x²y²﹙xy-1﹚-﹙xy-1﹚
=﹙xy-1﹚﹙x²y²-1﹚
=﹙xy-1﹚﹙xy-1﹚﹙xy+1﹚
=﹙xy-1﹚²﹙xy+1﹚
因式分解:x³y³-x²y²-xy+1
因式分解:x³y³-x²y²-xy+1
因式分解:x³y³-x²y²-xy+1
x³y³-x²y²-xy+1
=x²y²﹙xy-1﹚-﹙xy-1﹚
=﹙xy-1﹚﹙x²y²-1﹚
=﹙xy-1﹚﹙xy-1﹚﹙xy+1﹚
=﹙xy-1﹚²﹙xy+1﹚