Question

решите уравнение 11^x+2-22*11^x=9

Answer 1

$11^{x+2} - 22*11^x = 9$
$11^x * 11^2 - 22*11^x = 9$
$121*11^x - 22*11^x = 9$
$99*11^x = 9$
$11^x = frac{1}{11}$
x = -1