Решить уравнение: 1) $x^2 + 12x + 36 = 0$; 2) $25x^2 - 30x + 9 = 0$.
$x^2 + 12x + 36 = 0$ $(x + 6)^2 = 0$ x + 6 = 0 x = −6
$25x^2 - 30x + 9 = 0$ $(5x - 3)^2 = 0$ 5x − 3 = 0 5x = 3 $x = \frac{3}{5}$
