若|a-2|+(2b+1)2=0,求代数式2(3a2b-ab2)-4a2b+5- 发布时间:2017-04-26 12:58 │ 来源:www.tikuol.com 题型:解答题 问题: 若|a-2|+(2b+1)2=0,求代数式2(3a2b-ab2)-4a2b+5-3(23a2b-ab2+4)的值.
题型:解答题 I knew that would ever discourage him; he would never give up wanting to be a director.A.somethingB.anythingC.everythingD.nothing 查看答案