(2m+3)(-2m-3)的计算结果是 [ ] A.4m 2 -9B.-4m 2 -9C.-4m 2 -12...
(2m+3)(-2m-3)的计算结果是[]A.4m2-9B.-4m2-9C.-4m2-12m-9D.-4m2+12m-9...
(2m+3)(-2m-3)的计算结果是 [ ] A.4m 2 -9B.-4m 2 -9C.-4m 2 -12m-9 D.-4m 2 +12m-9
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