若 x+23x−5<0 ，化简 25−30x+9x2−(x+2)2−3 的结果为_1．

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若

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<0 ，化简 25−30x+9x2−(x+2)2−3 的结果为____．

上一题下一题 0.0难度选择题更新时间:2019-11-23 09:44:42

−4x

Lost My English dictionary. My name is Grace. Please call 233-4105 or look for me in Room 405	Shopping List(购物单) * 2 pencils * A pencil sharpener * New CDs of Jay Chou Lily
Bill Smith English teacher No. 9 Middle School of Nanjing Tel: 668-0796 E-mail: bill999@sina.com	Name: Tom Cooper Age:21 Tel:9873-8769 Mobile: 1596872023 E-mail:Tom. C@yahoo.cn Address: 321 Yongfu Road