分解因式:(x+2y)(x-2y)-(x-4y)(x+4y)+(6y-5x)(6x-5y)

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分解因式:(x+2y)(x-2y)-(x-4y)(x+4y)+(6y-5x)(6x-5y)

分解因式:(x+2y)(x-2y)-(x-4y)(x+4y)+(6y-5x)(6x-5y)
分解因式:(x+2y)(x-2y)-(x-4y)(x+4y)+(6y-5x)(6x-5y)

分解因式:(x+2y)(x-2y)-(x-4y)(x+4y)+(6y-5x)(6x-5y)
(x+2y)(x-2y)-(x-4y)(x+4y)+(6y-5x)(6x-5y)
= x^2-4y^2-x^2+16y^2+36xy-30y^2-30x^2+25xy
= -18y^2+61xy-30x^2