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6(x-3)²-24=?
人气:395 ℃ 时间:2020-01-31 13:46:28
解答
6(x-3)²-24
=6(x^2+9-6x)-24
=6x^2-36x+54-24
=6x^2-36x+30
=6(x^2-6x+5)
=6(x-1)(x-5)
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