首页
下列结论正确的是A.3a+2a=5a2B.C.(a+b)(a-b)=a2-b2D.x6÷x...
试题详情
下列结论正确的是( )
A.3a+2a=5a
2B.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADYAAAASCAYAAAAQeC39AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAE8SURBVFhH7VXBEYQgDExdPijHP534phC+FuKD
UnIGAUG8ISDOOc45c49TkuxmNwHw5AEA5PzOYp/yDr4RewrAVhx/Yq2da42jUbjy8BQzCkWYO4nz
lYrMWDaxGJvckTGIzShBoDIbIqMEglDo/tp3nEXjzzB52ZzlZ8UWsBBOQM+tTGyWByJpgnJx3glO
c7JMxiQNnmUFsVwhg0oACi8hD3f1KZ5iUVoSoMqKzsN7zPOIkVJW8Spifq4Ol3aU44czFinmBPBO
Ks/YwURny6PaZzcFxNgA9eg6PoZyX/2d2bIfwqblcSwfzRlore3naQAcpiWs7wwyBa12vHtptLdq
m/183VvlNtUSxcIFuN9l7cU7R7pme7WTuY9LjasipFr1qu2Mt0e6ZHks04AwTO8jRp0i1V6nmLfA
G4h9AJMPtoHrGgAQAAAAAElFTkSuQmCC
)
C.(a+b)(a-b)=a
2-b
2D.x
6÷x
2=x
3
相关试题
-
下列结论正确的是( )
A.3a+2a=5a2
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADYAAAASCAYAAAAQeC39AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAE8SURBVFhH7VXBEYQgDExdPijHP534phC+FuKD
UnIGAUG8ISDOOc45c49TkuxmNwHw5AEA5PzOYp/yDr4RewrAVhx/Yq2da42jUbjy8BQzCkWYO4nz
lYrMWDaxGJvckTGIzShBoDIbIqMEglDo/tp3nEXjzzB52ZzlZ8UWsBBOQM+tTGyWByJpgnJx3glO
c7JMxiQNnmUFsVwhg0oACi8hD3f1KZ5iUVoSoMqKzsN7zPOIkVJW8Spifq4Ol3aU44czFinmBPBO
Ks/YwURny6PaZzcFxNgA9eg6PoZyX/2d2bIfwqblcSwfzRlore3naQAcpiWs7wwyBa12vHtptLdq
m/183VvlNtUSxcIFuN9l7cU7R7pme7WTuY9LjasipFr1qu2Mt0e6ZHks04AwTO8jRp0i1V6nmLfA
G4h9AJMPtoHrGgAQAAAAAElFTkSuQmCC
)
C.(a+b)(a-b)=a2-b2
D.x6÷x2=x3
-
下列结论正确的是( )
A.3a+2a=5a2
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADYAAAASCAYAAAAQeC39AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAE8SURBVFhH7VXBEYQgDExdPijHP534phC+FuKD
UnIGAUG8ISDOOc45c49TkuxmNwHw5AEA5PzOYp/yDr4RewrAVhx/Yq2da42jUbjy8BQzCkWYO4nz
lYrMWDaxGJvckTGIzShBoDIbIqMEglDo/tp3nEXjzzB52ZzlZ8UWsBBOQM+tTGyWByJpgnJx3glO
c7JMxiQNnmUFsVwhg0oACi8hD3f1KZ5iUVoSoMqKzsN7zPOIkVJW8Spifq4Ol3aU44czFinmBPBO
Ks/YwURny6PaZzcFxNgA9eg6PoZyX/2d2bIfwqblcSwfzRlore3naQAcpiWs7wwyBa12vHtptLdq
m/183VvlNtUSxcIFuN9l7cU7R7pme7WTuY9LjasipFr1qu2Mt0e6ZHks04AwTO8jRp0i1V6nmLfA
G4h9AJMPtoHrGgAQAAAAAElFTkSuQmCC
)
C.(a+b)(a-b)=a2-b2
D.x6÷x2=x3
-
下列结论正确的是( )
A.3a+2a=5a2
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADYAAAASCAYAAAAQeC39AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAE8SURBVFhH7VXBEYQgDExdPijHP534phC+FuKD
UnIGAUG8ISDOOc45c49TkuxmNwHw5AEA5PzOYp/yDr4RewrAVhx/Yq2da42jUbjy8BQzCkWYO4nz
lYrMWDaxGJvckTGIzShBoDIbIqMEglDo/tp3nEXjzzB52ZzlZ8UWsBBOQM+tTGyWByJpgnJx3glO
c7JMxiQNnmUFsVwhg0oACi8hD3f1KZ5iUVoSoMqKzsN7zPOIkVJW8Spifq4Ol3aU44czFinmBPBO
Ks/YwURny6PaZzcFxNgA9eg6PoZyX/2d2bIfwqblcSwfzRlore3naQAcpiWs7wwyBa12vHtptLdq
m/183VvlNtUSxcIFuN9l7cU7R7pme7WTuY9LjasipFr1qu2Mt0e6ZHks04AwTO8jRp0i1V6nmLfA
G4h9AJMPtoHrGgAQAAAAAElFTkSuQmCC
)
C.(a+b)(a-b)=a2-b2
D.x6÷x2=x3
-
下列各选项的运算结果正确的是( )
A.(2x2)3=8x6
B.5a2b-2a2b=3
C.x6÷x2=x3
D.(a-b)2=a2-b2
-
(2010•济南)下列各选项的运算结果正确的是( )
A.(2x2)3=8x6
B.5a2b-2a2b=3
C.x6÷x2=x3
D.(a-b)2=a2-b2
-
下列运算正确的是 ( )
A.3a+2a=a5
B.x3•x4=x12
C.(b+a)(a-b)=a2-b2
D.(a-b)2=a2-b2-2ab
-
下列运算中正确的是( )
A.3a+2a=5a2
B.(a-b)2=a2-b2
C.2a2•a3=2a6
D.a10÷a4=a6
-
下列运算中,正确的是( )
A.(a-b)2=a2-b2
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADYAAAASCAYAAAAQeC39AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAEoSURBVFhH7VVLDoQgDO25WHAc99zENQdh24O4
4CgdiihiMFYmzjBmSExEBft+BagyAIAkV21tL8/gCFgvBbbW8QfWylzrOo7CO+OiYp6sBjL4zi9l
a8XA0OR+oC35tP0lYN7quMkemKTRLN/IYFH8z+nwlvRaDJLhppfmcmBhE2PxNsUk5OyBesRVIX4X
iU+qCYEFCxqWuUMrbtGyLa8ohkaTjebtGxiaHJNzxQILOVN1YBIb3ZKxrVpF3kJGzw5oZqFWuJ4l
7GQw4Ya2zRrIDanwYS3yuCPdZ0WJ6kcs5qjkL8A5F2ejAlLjFO+/AaxVeu6ExfGTopOtGJWbVfsV
YPWYzJYsMjaEA45VEx2OrRR/aF0BbBoVgRqfB4zJZNUep9jikicAewHU3sTIPalmnwAAAABJRU5E
rkJggg==
)
C.3a2+2a3=5a5
D.-(a-1)=1-a
-
下列运算正确的是( )
A.a3•a2=a6
B.(ab3)2=a2b6
C.(a-b)2=a2-b2
D.5a-3a=2
-
下列运算正确的是( )
A.2a2-a2=2
B.2a•3a=6a2
C.(a-b)2=a2-b2
D.a6÷a2=a3