Question

решить ураанение
$\sqrt{2x + 14 } = 2x + 12$

Answer 1

2x=14=(2x+120^2

2x+14=4x^2+48x+144

2x+14-4x^2-48x-144=0

-46x-130-4x^2=0

-4x^2-46x-130=0

2x^2+23x=65=0

x=-5