Respuesta :

aleghe8297

Answer:

x=±√−21

Step-by-step explanation:

-x^2 - 14x -49

-1 xx - 1 7 2 x - 1 7 7

-1 ( x^2 + 14 +7)

(x^2 + 21) = 0

subtract 21

x^2 = -21

x=±√−21