计算:lg25+2/3lg8+lg5乘以lg20+lg^22

来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/19 07:51:27
计算:lg25+2/3lg8+lg5乘以lg20+lg^22计算:lg25+2/3lg8+lg5乘以lg20+lg^22计算:lg25+2/3lg8+lg5乘以lg20+lg^22lg25+2/3lg

计算:lg25+2/3lg8+lg5乘以lg20+lg^22
计算:lg25+2/3lg8+lg5乘以lg20+lg^22

计算:lg25+2/3lg8+lg5乘以lg20+lg^22
lg25+2/3lg8+lg5乘以lg20+lg^22
=2lg5+2lg2+lg5*(2lg2+lg5)+lg2*lg2
=2(lg5+lg2)+(lg5)^2+2lg2*lg5+(lg2)^2
=2lg10+(lg5+lg2)^2
=2+1^2=3