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因式分解 144x²-9y²
16m⁴-8m²+1
人气:373 ℃ 时间:2020-03-28 04:04:11
解答
144x²-9y²
=(12x+3y)(12x-3y)
=9(4x+y)(4x-y)
16m⁴-8m²+1
=(4m²-1)²
=[(2m+1)(2m-1)]²
=(2m+1)²(2m-1)²
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