Question

Решить уравнение 94-2y^2=21

Answer 1

$94 - 2y^{2} = 21 \ - 2 {y}^{2} = 21 - 94 \ - 2 {y}^{2} = - 73 \ y^{2} = frac{73}{2} \ y = + - sqrt{36.5}$