1) log2 2/5+log2 2*5=log2 2 - log2 5 +log2 2 +log2 5 =2*log2 2 =2
2) log8 8/7+ log8 7/8=log8 8 -log8 7+log8 7-log8 8=0
3) log4 3*16 -log4 3=log4 3+log4 4² -log4 3=log4 4² =2
4)log7 7²/50 -log7/50=log7 7²-log7 50-log7 7 +log7 50=2-1=1
5) 4^(log4 7)=7
6) 36^(log6 2)=6^(2*log6 2)=6^(log6 2²)=4
7) 2^(log2 5+1)=2^(log2 5+log2 2)=2^(log2 10)=10
8) 4^(log4 3+log4 5)=4^(log4 3*5)=15