摘要:下列运算正确的是( ) A.3a-=a-b B.(a3b2-2a2b)÷ab=a2b-2 C.=a2-2b2 D.(-a2b)3=-a6b3
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下列运算正确的是( )
| A、3a-(2a-b)=a-b | ||||
| B、(a3b2-2a2b)÷ab=a2b-2 | ||||
| C、(a+2b)(a-2b)=a2-2b2 | ||||
D、(-
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| A、3a-(2a-b)=a-b | ||||
| B、(a3b2-2a2b)÷ab=a2b-2 | ||||
| C、(a+2b)(a-2b)=a2-2b2 | ||||
D、(-
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