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3X平方-12X=-12用因式分解怎么解?
人气:363 ℃ 时间:2026-05-29 19:52:35
解答

3x^2 - 12x = -12 ==> 3x^2 - 12x +12 = 0 ==> x^2 - 4x + 4 = 0 ==> (x-2)^2 = 0 ==> x = 2

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