题目列表(包括答案和解析)
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A、(-3)×4+(-3)×(-
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B、(-3)×4-(-3)×(-
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C、3×4-(-3)×(-
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D、(-3)×4+3×(-
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A.(-3)×4+(-3)×(-
| B.(-3)×4-(-3)×(-
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C.3×4-(-3)×(-
| D.(-3)×4+3×(-
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x2-6x+21 |
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