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因式分解题3x^4+6x^2-9
人气:263 ℃ 时间:2020-06-11 07:49:08
解答
3x^4+6x^2-9
=3(x^4+2x²-3)
=3(x²-1)(x²+3)
=3(x-1)(x+1)(x²+3)
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