Question

Решите уравнения:1)(x-1)^2=36
2)(y+5)^2=4
3)(x+7)^2=5
4)(y-1/9)^2=4/81

Answer 1

$1) (x - 1) ^{2} = 36 \ x - 1 = 6 \ x = 6 + 1 \ x = 7$
$3) {(y - frac{1}{9}) }^{2} = frac{4}{81} \ y - frac{1}{9} = frac{2}{9} = \ y = frac{2}{9} - frac{1}{9} \ y = frac{1}{9}$