求解答 3(x²+2)-3(x+1)(x-1)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/25 12:52:03
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求解答 3(x²+2)-3(x+1)(x-1)
求解答 3(x²+2)-3(x+1)(x-1)
求解答 3(x²+2)-3(x+1)(x-1)
3(x²+2)-3(x+1)(x-1)
=(3x²+6)-3(x²-1)
=3x²+6-3x²+3
=9
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来源:学生作业帮助网 编辑:作业帮 时间:2024/06/25 12:52:03
求解答 3(x²+2)-3(x+1)(x-1)
求解答 3(x²+2)-3(x+1)(x-1)
求解答 3(x²+2)-3(x+1)(x-1)
3(x²+2)-3(x+1)(x-1)
=(3x²+6)-3(x²-1)
=3x²+6-3x²+3
=9