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下列等式一定成立的是A.(a+b)2=a2+b2B.a2•a3=a6C.D.
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下列等式一定成立的是( )
A.(a+b)
2=a
2+b
2B.a
2•a
3=a
6C.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADkAAAAjCAYAAAAuVaJ4AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAF4SURBVGhD7ZhhkoMgDIVzMu7EdbgMR+Eo2cRV
lwB1dWnMNq0z/mhHgY88Hg8B3+CCN2DED+TLVbkkDBAwFTlyP5XMEQGAbk3IvRPqKGYjEWSMapAs
kw1skQxgaDVzC7YiZMkZ62VQUkAISfx3CyMqQnYALF3vkFzJl5JrjuxYD+6hwZBkTKrIerpJrjlG
6srqOoJcHXGp2IT9s0wnXp+bmZqBOOpxUBio5cUzIR843TOZjViH9LsFfij7wXI43e+JBwFLEVbP
a/BqNZYtoxuopWyPYh1b/1XCEzNp/cieXXcX/YeQ1x3+qJLKkUxrTR61y7jdKcQukumJuj9qOVyX
DWTBFK67q14NntMyYH0O/Ose+ZyxzLUiwoDcvpx8GZBxrvUVH5Dd0U4mNxeQ/Y7w7S1bzHQBiet6
/MkxHiHJskb5eYP2UcnGl30aTw3ZSXcQ6+Y2K+O31z2//b7kQ657EOi/ng8DunEtVLr3UclfpuYD
qaIdg0a/AIbkt4Vqy4b+AAAAAElFTkSuQmCC
)
D.
相关试题
-
下列等式一定成立的是( )
A.(a+b)2=a2+b2
B.a2•a3=a6
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADkAAAAjCAYAAAAuVaJ4AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAF4SURBVGhD7ZhhkoMgDIVzMu7EdbgMR+Eo2cRV
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qaIdg0a/AIbkt4Vqy4b+AAAAAElFTkSuQmCC
)
D.
-
下列等式一定成立的是( )
A.(a+b)2=a2+b2
B.a2•a3=a6
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADkAAAAjCAYAAAAuVaJ4AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAF4SURBVGhD7ZhhkoMgDIVzMu7EdbgMR+Eo2cRV
lwB1dWnMNq0z/mhHgY88Hg8B3+CCN2DED+TLVbkkDBAwFTlyP5XMEQGAbk3IvRPqKGYjEWSMapAs
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qaIdg0a/AIbkt4Vqy4b+AAAAAElFTkSuQmCC
)
D.
-
下列等式一定成立的是( )
A.(a+b)2=a2+b2
B.a2•a3=a6
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADkAAAAjCAYAAAAuVaJ4AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAF4SURBVGhD7ZhhkoMgDIVzMu7EdbgMR+Eo2cRV
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)
D.
-
下列等式一定成立的是( )
A.(a+b)2=a2+b2
B.a2•a3=a6
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADkAAAAjCAYAAAAuVaJ4AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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)
D.
-
下列等式中,一定成立的是( )
A.(a+b)2=a2+b2
B.2a2+a=3a3
C.2a-1=![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABMAAAAjCAYAAAB2KjFhAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAD5SURBVEhL7ZXrDcMgDIQ9GTuxDst4FEZxOR4B
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)
D.a2•a3=a5
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(2009•宝山区二模)下列等式中,一定成立的是( )
A.(a+b)2=a2+b2
B.2a2+a=3a3
C.2a-1=![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABMAAAAjCAYAAAB2KjFhAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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9OEAAAAASUVORK5CYII=
)
D.a2•a3=a5
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(2009•宝山区二模)下列等式中,一定成立的是( )
A.(a+b)2=a2+b2
B.2a2+a=3a3
C.2a-1=![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABMAAAAjCAYAAAB2KjFhAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAD5SURBVEhL7ZXrDcMgDIQ9GTuxDst4FEZxOR4B
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byhGH9U50vr3CMMipUEQGN86xWybeIZ6CXd3Ua1S7ahEOV3VaTHWAgew9T46n/mQrvECO9eLt8J7
9OEAAAAASUVORK5CYII=
)
D.a2•a3=a5
-
(2009•宝山区二模)下列等式中,一定成立的是( )
A.(a+b)2=a2+b2
B.2a2+a=3a3
C.2a-1=![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABMAAAAjCAYAAAB2KjFhAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAD5SURBVEhL7ZXrDcMgDIQ9GTuxDst4FEZxOR4B
BxJQi/qjaZQoCoIv9vkwJBsv2siSL8O8E0NGnJ/ncB8ZWyGi8OyAxWBY7B/WlmXBGr+vWTQsfJYe
y/fGXdBs7vwy4ymwIu6nb+j2FM1SyypNMJjTOFloqkPzkcDlh7WxqQNwZvULH5NnVpF4Z96Orq8m
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9OEAAAAASUVORK5CYII=
)
D.a2•a3=a5
-
(2009•宝山区一模)下列等式中,一定成立的是( )
A.(a+b)2=a2+b2
B.(ab)2=a2b2
C.2a+3b=5ab
D.a6÷a3=a2
-
下列等式成立的是( )
A.2a2-3a=-a
B.(a2)3=a6
C.a6÷a3=a2
D.(a+4)(a-4)=a2-4