因式分解:(1)x³y²-x (2)m²-2mn+n²-1

因式分解:(1)x³y²-x (2)m²-2mn+n²-1
因式分解:(1)x³y²-x (2)m²-2mn+n²-1

因式分解:(1)x³y²-x (2)m²-2mn+n²-1
(1)x³y²-x
=x(x²y²-1)
=x(xy+1)(xy-1)
(2)m²-2mn+n²-1
=(m-n)²-1
=(m-n+1)(m-n-1)
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(1)x³y²-x
=x(x²y²-1)
=x(xy+1)(xy-1)
(2)m²-2mn+n²-1
=(m-n)²-1
=(m-n+1)(m-n-1)