化简:3x2-5x一6-7x2-6x+15
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问题详情:
化简:3x2-5x一6-7x2-6x+15
【回答】
3x2-5x–6-7x2-6x +15
=(3-7)x2+(-5-6)x +(-6+15)·············································· 1分
= -4x2-11 x +9················································································· 2分
知识点:整式的加减
题型:计算题
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