试题:
化简:(1)﹣9y+6; (2)5(a2b﹣3ab2)﹣2(a2b﹣7ab2); (3)3x2﹣[7x﹣(4x﹣3)﹣2x2]; (4)5a2﹣[a2+(5a2﹣2a)﹣2(a2﹣3a)]. |
整式的加减
2016-05-17
答案:
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