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(x-6y)(x+2y)+16y^2 因式分解
人气:149 ℃ 时间:2020-04-15 07:47:24
解答
(x-6y)(x+2y)+16y^2
=x^2-4xy-12y^2+16y^2
=x^2-4xy+4y^2
=(x-2y)^2
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