Question

помогите пожалуйсиа

Answer 1

1.
$x + 100 = {5}^{3} \ x + 100 = 125 \ x = 125 - 100 = 25$
2.
$( {x - 6)}^{2} = 6 - x \ {x}^{2} - 12x + 36 - 6 + x = 0 \ {x}^{2} - 11x + 30 = 0$
$d = ( { - 11)}^{2} - 4 times 30 = 121 - \ 120 = 1$
$x1 = frac{11 + 1}{2} = frac{12}{2} = 6 \ x2 = frac{11 - 1}{2} = frac{10}{2} = 5$

Последний не знаю

Answer 2

спасибо