因式分解x^2-9x^2y^2+6xy-1

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因式分解x^2-9x^2y^2+6xy-1因式分解x^2-9x^2y^2+6xy-1因式分解x^2-9x^2y^2+6xy-1x^2-9x^2y^2+6xy-1=x^2-(9x^2y^2-6xy+1)

因式分解x^2-9x^2y^2+6xy-1
因式分解x^2-9x^2y^2+6xy-1

因式分解x^2-9x^2y^2+6xy-1
x^2-9x^2y^2+6xy-1
=x^2-(9x^2y^2-6xy+1)
=x^2-(3xy-1)^2
=(x+3xy-1)(x-3xy+1)

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