annab957 annab957

02-12-2019
Mathematics

contestada

x squared by 2 + 4x = -11

Respuesta :

Yang100 Yang100

02-12-2019

Answer:

x=-2+sqrt(7)*i, -2-sqrt(7)*i

Step-by-step explanation:

x^2+4x=-11

x^2+4x-(-11)=0

x^2+4x+11=0

Apply the quadratic formula with a=1, b=4 and c=11.

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