求计算a的三次方b-2a²b²+ab三次方,4x²y²-4x²yz+x²z²还有a的三次方+9ab²-6a²b

求计算a的三次方b-2a²b²+ab三次方,4x²y²-4x²yz+x²z²还有a的三次方+9ab²-6a²b
求计算a的三次方b-2a²b²+ab三次方,4x²y²-4x²yz+x²z²
还有a的三次方+9ab²-6a²b

求计算a的三次方b-2a²b²+ab三次方,4x²y²-4x²yz+x²z²还有a的三次方+9ab²-6a²b
=ab(a²-2ab+b²)
=ab(a-b)²
=x²(4y²-4yz+z²)
=x²(2y-z)²
=a(a²-6ab+9)
=a(a-3)²

a³b-2a²b²+ab³
=ab(a²-2ab+b²)
=ab(a-b)²
4x²y²-4x²yz+x²z²
=x²(4y²-4yz+z²)
=x²(2y-z)²
a³+9ab²-6a²b
=a(a²+9b²-6ab)
=a(a-3b)²
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a³b-2a²b²+ab³
=ab(a²-2ab+b²)
=ab(a-b)²
4x²y²-4x²yz+x²z²
=x²(4y²-4yz+z²)
=x²(2y-z)²
a³+9ab²-6a²b
=a(a²-6ab+9b²)
=a(a-3b)²