计算:1. (lg5)^2 +lg2 *lg5
问题描述:
计算:1. (lg5)^2 +lg2 *lg5
2. lg二次根号100 +log2^ (4^3*2^5)
需要过程,急需,谢谢了
答
1.(lg5)^2 +lg2 *lg5
=lg5(lg5+ lg2 )
=lg5
2.lg二次根号100 +log2^ (4^3 *2^5)
=lg10+log2 (2^6 *2^5)
=1+11
=12