jeremycsmith03122 jeremycsmith03122

21-11-2019
Mathematics

contestada

How do you solve
f(x)=-2(x+3)^2 =5

Respuesta :

Yang100 Yang100

27-11-2019

Answer:

x=(-6+/-sqrt(10)*i)/2

Step-by-step explanation:

-2(x+3)^2=5

-2(x+3)(x+3)=5

-2(x^2+3x+3x+9)=5

-2(x^2+6x+9)=5

-2x^2-12x-18=5

-2x^2-12x-18-5=0

-2x^2-12x-23=0

2x^2+12x+23=0

Apply the quadratic formula,

you get x=(-6+/-sqrt(10)*i)/2.

Answer Link

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