Question

2²log² 10+logfrac{1}{5} =?
55=

Answer 1

2² log² 10 + log $frac{1}{5}$ 5= ( 2 log 2 10 )² + log $frac{1}{5}$ 5=

= 10² + log $frac{1}{5}$ 5=100+(-1)=99