СРОЧНО АЛГЕБРА!!!!!!!!!!!!

Question

СРОЧНО АЛГЕБРА!!!!!!!!!!!!

---

Answer 1

х^2 - 8 = 14х

х^2 - 14х - 8 = 0

k = 1/2b

D = k^2 - ac

D = (-7)^2 - 1 × (-8) = 49 + 8 = 57

х = (-k ± √D)/a

x = (-(-7) ± √57)/1 = 7 ± √57

Answer 2

x² - 14x - 8 = 0

D = 196 + 32 = 228

x = (14±√228)/2 = 7 ±√57