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下列各运算中,错误的个数是①3+3-1=-3;②-=;③(2a2)3=8a5;④-a8÷a...
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下列各运算中,错误的个数是( )
①3+3
-1=-3;②
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAACySURBVDhPzZO5EcMgEEW3LgLKId9OiCmElEIU
UMq3lsOAjTRrRWaGhOH9Y5EIm0VEUO0reHf+eUb/D+dgxxxsQD4jK2MncAPmmjo4MTh9T0cBZwTb
n44xayjg4ZhYRCyCFNZ3HgJlcK3DT85VYgyPEF17AveWl0/zep1wd44xlnveEIw/apcbOPGuc0lQ
3Rc4B9jpR5mfbMnnzkvifh97FFrgwxuQ8c9g0RT3R849kBZ+AeaPnaoEN+d7AAAAAElFTkSuQmCC
)
-
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wlH6ZwRJ8ItklVSpQmn9picIg4+IsDT+iUf77R59XMz2zEB7xIw7x44e2nI+zrASZl5PxZG5OskN
0WtQdp+Ku0ClhFXnVsyWUKp45nyrH3ggjvDaokQnRIRgchtMJZRfs8fV8KVHpVUhhDR1iqDcluat
WBKu3ZIDe2iyPi0SweF+FUtA/SM58G98ZscV9xH28A1cNzenQMq9E8tF4v7KuVCsin81ApctPDAe
KwAAAABJRU5ErkJggg==
)
=
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jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC0SURBVDhPzZNNDsAQEIXnXBaOY+8m1g5i6yBd
zFFe/bY0pGpViUTEN+/NA2EwiAhLcwaP9p979HOYLWTNQfvL7IJtDy0tOCFhHYpU/h1mLmAW9PoL
3CbqNeib7Vsx3f0OnEqU4KTNCbz3/HgIbCWoBEhwqjxFdV9BsDcdTd/knEvnjCAIc2Q7U5hh5Sjt
5CCrd3BUaj5Kk1ffswqHovpcuW+ma+4wAiTMHhzrRvUt5WpqFT4BvDKYovKwNAUAAAAASUVORK5C
YII=
)
;③(2a
2)
3=8a
5;④-a
8÷a
4=-a
4A.1
B.2
C.3
D.4
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下列各运算中,错误的个数是( )
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下列各运算中,错误的个数是( )
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下列各运算中,错误的个数是( )
①3+3-1=-3;②
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;③(2a2)3=8a5;④-a8÷a4=-a4
A.1
B.2
C.3
D.4