Question

Срочно!!!!! Помогите!!! ​

Answer 1

$1)2^{20}:(2^{8})^{2}=2^{20}:2^{16}=2^{20-16}=2^{4}=16\\\\2)(11^{3})^{4}:(11^{5})^{2} =11^{12}:11^{10}=11^{12-10}=11^{2}=121\\\\3)7^{9}*(7^{2})^{6}:7^{19}=7^{9}*7^{12}:7^{19}=7^{9+12-19}=7^{2}=49\\\\4)16^{2}*8=(2^{4})^{2}*2^{3}=2^{8}*2^{3}=2^{11}=2048$

$5)\frac{10^{17}*(10^{2})^{3}}{(10^{3})^{4}*10^{9}}=\frac{10^{17}*10^{6}}{10^{12}*10^{9}}=\frac{10^{17+6} }{10^{12+9}} }=\frac{10^{23}}{10^{21}}=10^{23-21}=10^{2}=100\\\\6)\frac{9^{3}*81^{2}}{3^{12}}=\frac{(3^{2})^{3}*(3^{4})^{2}}{3^{12}}=\frac{3^{6}*3^{8}}{3^{12}}=\frac{3^{6+8}}{3^{12}}=\frac{3^{14}}{3^{12}}=3^{14-12}=3^{2}=9$