Solve the equation by factoring, by finding square roots, or by using the quadratic formula.

Question

3(x+4)^2= -27

Answer 1

3 ( x + 4 ) ^ 2 = - 27 Divide both sides with 3

( x + 4 ) ^ 2 = - 9

The left hand side is a perfect square,so you can apply the square root method :

x + 4 = + OR - sqrt ( - 9 )

x = + OR - sqrt ( - 9 )- 4

( Remark:

sqrt ( - 9 ) = sqrt ( - 1 * 3 ^ 2 ) =
+ OR - 3i

where i = Imaginary unit = sqrt ( - 1 )
)

x = + OR - ( 3 i ) - 4

Answer 2

post it.