ManuelaSarinana04 ManuelaSarinana04
  • 28-02-2020
  • Mathematics
contestada

Study the equation.
x² + 6x = - 4

Respuesta :

PollyP52 PollyP52
  • 28-02-2020

Answer:

x = -3+√5,  -3-√5 (exact roots)

or  x = -0.76, -5.24   to the nearest hundredth.

Step-by-step explanation:

x² + 6x = - 4

Completing the square:

(x + 3)^2 - 9 = -4

(x + 3)^2 = 5

x + 3 = +/-√5

x = - 3 + √5, - 3 - √5

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