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分解因式:(3x-2y)^2-(3x+2y)^2
人气:115 ℃ 时间:2020-05-15 09:29:32
解答
(3x-2y)^2-(3x+2y)^2
=[(3x-2y)+(3x+2y)][(3x-2y)-(3x+2y)]
=(3x-2y+3x+2y)(3x-2y-3x-2y)
=(6x)*(-4y)
=-24xy
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