Presented By Presented By Harry Mills / Harry Mills / PRESENTATIONPRO PRESENTATIONPRO 第七章小结与思考 初中数学八年级下册 （苏科版）Presented By Presented By Harry Mills / Harry Mills / PRESENTATIONPRO PRESENTATIONPRO 1、已知a0，用“”或“” 号填空： (1)a+1_1；(2)a-2_-2； (3)2a_0；(4)-2a_0; (5)a 2 _0;(6)a 5 _0 回顾与思考 回顾与思考Presented By Presented By Harry Mills / Harry Mills / PRESENTATIONPRO PRESENTATIONPRO 知识小结 知识小结 不等式的性质（1）： 不等式的性质（2）： aba+cb+c (或a-cb-c ) ab，c0 acbc ab，c0 acbcPresented By Presented By Harry Mills / Harry Mills / PRE
