[(3ab-2)(3ab+2)+(2ab+2)²]/5ab= v

分类: 作业答案 • 2021-12-19 15:52:52

问题描述：

答

[(3ab-2)(3ab+2)+(2ab+2)²]/5ab
=（9a^2b^2-4+4a^2b^2+8ab+4)/5ab
=(13a^2b^2+8ab)/5ab
=13ab/5+8/5

答

(3ab-2)(3ab+2)+(2ab+2)2]/5ab
=(9a^2b^2-4+4a^2b^2+8ab+4)/5ab
=(13a^2b^2+8ab)/5ab
=13/5ab+8/5