5x(x2-2x+4)+x2(x+1)的计算结果是()A.6x3-10x2+20xB.5x3-11x2+20xC.6x3-9x2+20xD.5x3-10x2+20x-数学

题目简介

5x(x2-2x+4)+x2(x+1)的计算结果是()A.6x3-10x2+20xB.5x3-11x2+20xC.6x3-9x2+20xD.5x3-10x2+20x-数学

题目详情

5x(x2-2x+4)+x2(x+1)的计算结果是(  )
A.6x3-10x2+20xB.5x3-11x2+20x
C.6x3-9x2+20xD.5x3-10x2+20x
题型:单选题难度:偏易来源:不详

答案

C

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