Решите уравнение СРОЧНО х^2+12х-64=0

Question

Решите уравнение СРОЧНО х^2+12х-64=0

Answer 1

.............................................................

---

Answer 2

D = b^2 - 4ac = 144 + 156 = 400
x1 = -b - D^1/2 / 2a = -12-20 / 2 =-16
x2 = -b + D^1/2 / 2a = -12+20 / 2 = 4