Friday

February 27, 2015

February 27, 2015

Posted by **Lilly** on Monday, November 14, 2011 at 12:41am.

3(x+4)^2= -27

- Math -
**Bosnian**, Monday, November 14, 2011 at 1:45am3 ( 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

- Math -
**Henry**, Tuesday, November 15, 2011 at 7:23pmpost it.

**Answer this Question**

**Related Questions**

algebra - 1)Solve by factoring:5x^2=4-19x answer=-4,1/5 2)Which quadratic ...

Algebra2 - Find the polynomials roots to each of the following problems: #1) x^2...

Math - 2x(x+3) = 0 Is there a way to solve that using the below methods? ...

Algebra - 1)Solve by factoring:5x^2=4-19x answer=-4,1/5 2)Which quadratic ...

Algebra II - 1)What method(s) would you choose to solve the equation: x2 + 2x - ...

Math - Solve the equation by factoring, by finding square roots, or by ...

math - 1. solve by using the quadratic formula. 5x^2+x=3 2. solve by completing ...

College Algebra 1 - Using the factoring method, solve for the roots of quadratic...

Math - A: Solve the following equation: k2 + 4k = 0 A: By factoring B: By using ...

Math using Quadratic equation - The area of a square is 196cm2(squared), find ...