Question

Уравнение по алгебре

Answer 1

$0,1^{7+4x}=100 \ 10^{-(7+4x)}=10^2 \ 10^{-7-4x}=10^2 \ \ -7-4x=2 \ -4x=9 \ \ x=- frac{9}{4} =-2 frac{1}{4}$

Answer 2

${(0.1)}^{7 + 4x} = 100 \ {10}^{ - 7 - 4x} = {10}^{2} \ - 7 - 4x = 2 \ - 4x = 9 \ x = - frac{ 9}{4} = - 2 frac{1}{4} = - 2.25 = { - ( frac{3}{2} ) }^{2}$