Question

50 баллов.Помогите с log

Answer 1

$log_{4}((5x - 4) - 1 = t$
$t - \frac{3}{t} + 2 = 0$
${t}^{2} + 2t - 3 = 0 \\ t1 = - 3 \\ t2 = 1$
$log_{4}(5x - 4) - 1 = - 3 \\ 5x - 4 = \frac{1}{16} \\ x = \frac{65}{5×16}$
=13/16
$log_{4}(5x - 4) - 1 = 1 \\ 5x = 20 \\ x = \frac{20}{5}$
=4

Answer 2

решение во вложении.....