Solve by using the quadratic formula to solve x2 + 6x = -3. (1 points)

Question

mathstudent55 · Answer

First, add 3 to both sides of the equation.
Then use the quadratic formula with a = 1, b = 6, and c = 3.
Post what you get and ask questions if you have any.

anonymous · Answer

I go t -6 +- squareroot 24 over 2

anonymous · Answer

I did something wrong

mathstudent55 · Answer

Good so far. Now simplify.

anonymous · Answer

when I simplified I got -6 +- sroot 12

mathstudent55 · Answer

You have this so far, right?

$ x = \dfrac{-6 \pm \sqrt{24}}{2} $

anonymous · Answer

yes

mathstudent55 · Answer

$ \sqrt{24} = \sqrt{4 \times 6} $
You can pull out $\sqrt{4} = 2$, giving you $2\sqrt{6} $.

anonymous · Answer

that isn't an option I got that also as I continued

mathstudent55 · Answer

We're simplifying, We're not done yet. We'll get to the answer soon.

$x = \dfrac{-6 \pm \sqrt{24}}{2}$

$x = \dfrac{-6 \pm 2\sqrt{6}}{2}$

$x = \dfrac{(2)(-3) \pm (2)\sqrt{6}}{2}$

$x = \dfrac{(2)[-3 \pm \sqrt{6}]}{2}$

$x = -3 \pm \sqrt{6}$

anonymous · Answer

thank you!!!

mathstudent55 · Answer

wlcm