Question

Va rog <3 am nevoie urgent .....

Answer 1

$3^{2x}(3+1- \frac{1}{3})=297 \\ 3^{2x}=297* \frac{3}{11} \\ 3^{2x}= 81 \\ 3^{2x}=3^4 \\ 2x=4;x=2$
$b)2^x( \frac{1}{4}+ \frac{1}{8} + \frac{1}{16})=448 \\ 2^x* \frac{7}{16}=448 \\ 2^x=448* \frac{16}{7} \\ 2^x= 2^{10} \\ x=10$