因式分解.1.4a^(n-1)*b^2-16a^(n+1) 2.x^2*y^2-y^4-12xy^2+36y^2 3.x^2-6xy+9y^2-3x+9y+2

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因式分解.1.4a^(n-1)*b^2-16a^(n+1) 2.x^2*y^2-y^4-12xy^2+36y^2 3.x^2-6xy+9y^2-3x+9y+2
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因式分解.1.4a^(n-1)*b^2-16a^(n+1) 2.x^2*y^2-y^4-12xy^2+36y^2 3.x^2-6xy+9y^2-3x+9y+2
因式分解.1.4a^(n-1)*b^2-16a^(n+1) 2.x^2*y^2-y^4-12xy^2+36y^2 3.x^2-6xy+9y^2-3x+9y+2

因式分解.1.4a^(n-1)*b^2-16a^(n+1) 2.x^2*y^2-y^4-12xy^2+36y^2 3.x^2-6xy+9y^2-3x+9y+2
1.4a^(n-1)*b^2-16a^(n+1)
=4a^(n-1)(b²-4a²)
=4a^(n-1)(b-2a)(b+2a)
2.x^2*y^2-y^4-12xy^2+36y^2
=y²(x²-y²-12x＋36)
=y²[(x²-12x+36)-y²]
=y²[(x-6)²-y²]
=y²(x-6+y)(x-6-y)
3.x^2-6xy+9y^2-3x+9y+2
=(x-3y)²-3(x-3y)+2
=(x-3y-1)(x-3y-2)

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