9
102*1/6=17
10
3^(√11+9-8-√11) +12=3 +12=15
11
2^(1/12+1/4-1/3)=2^(1/12+3/12-4/12)=2^0=1
12
11^(2*0,16+1,68)=11^(0,32+1,68)=11²=121
13
4^(4*0,07+1,72)=4^(0,28+1,72)=4²=16
14
2^(-2*2,8)*3^(-2,8)*2^(1,8)*3^(1,8):2^(-4,8)=2^(-5,6+1,8+4,8)*3^(-2,8+1,8)=
=2*1/3=2/3
15
5^(1/20+1/5-1/4)=5^(1/20+4/20-5/20)=5^0=1