题目内容
下列计算正确的是 ( )
A.x2 + x2 = 2x4 | B.x2•x3=x6 | C.(2x3)2 = 2x6 | D. |
D
x2 + x2 = 2x2 ; x2•x3=x5; (2x3)2 = 4x6;;故选D.
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题目内容
A.x2 + x2 = 2x4 | B.x2•x3=x6 | C.(2x3)2 = 2x6 | D. |