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> 下列计算正确的是()A.20090=0B.(12)-2=-14C.(a-3)2=a9D.a2÷a-3=a5(a≠0)-数学
下列计算正确的是()A.20090=0B.(12)-2=-14C.(a-3)2=a9D.a2÷a-3=a5(a≠0)-数学
题目简介
下列计算正确的是()A.20090=0B.(12)-2=-14C.(a-3)2=a9D.a2÷a-3=a5(a≠0)-数学
题目详情
下列计算正确的是( )
A.
2009
0
=0
B.
(
)
-2
=-
C.(a
-3
)
2
=a
9
D.a
2
÷a
-3
=a
5
(a≠0)
题型:单选题
难度:偏易
来源:不详
答案
D
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题目简介
下列计算正确的是()A.20090=0B.(12)-2=-14C.(a-3)2=a9D.a2÷a-3=a5(a≠0)-数学
题目详情
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