求几道初一因式分解4(3x+2y)^2-9(x-y)^2x(a-b)^2-x(3x-wy)^2-(2x-3y)^2

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求几道初一因式分解4(3x+2y)^2-9(x-y)^2x(a-b)^2-x(3x-wy)^2-(2x-3y)^2
求几道初一因式分解
4(3x+2y)^2-9(x-y)^2
x(a-b)^2-x
(3x-wy)^2-(2x-3y)^2

求几道初一因式分解4(3x+2y)^2-9(x-y)^2x(a-b)^2-x(3x-wy)^2-(2x-3y)^2
4(3x+2y)^2-9(x-y)^2
=(6x+4y+3x-3y)(6x+3y-3x+3y)
=3(9x+y)(x+2y)
x(a-b)^2-x
=x(a-b+1)(a+b-1)
(3x-wy)^2-(2x-3y)^2
=(3x-wy+2x-3y)(3x-wy-2x+3y)
=(5x-3y-wy)(x+3y-wy)

1、27x^2+66xy+7y^2
2、xa^2-(1+2ab)x+xb^2
3、5x^2+(12-6w)x+(w^2-9)y^2