Question

(x^2-3):2-6x=5
Решить уравнение

Answer 1

(x^2 - 3)/2 - 6x = 5
x^2 - 3 - 12x = 10
x^2 - 12x - 13 = 0 
D = 6^2 + 13 = 49
x1 = 6 + 7 = 13
x2 = 6 - 7 = - 1