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4(3x+y)²-(2x-y)²(因式分解)
人气:185 ℃ 时间:2020-05-25 21:30:15
解答
4(3x+y)²-(2x-y)²
=(6x+2y)^2-(2x-y)^2
=(8x+y)(4x+3y)
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