Integration/ Completing the square...

Hi guys sorry I haven't been online much I've been very busy with SS1...

Quick Question:

If I am completing the square and I get the point where I am about the square both sides, but the side on the right is a negative number what am I to do. By the rule you cannot take the square root of a negative number. So after examining this situation I have come to the conclusion that I might should move the # back over to the left hand side.

Here is my case

(x+3)^2=-1

See my Dilemma...

Thanks,

-qbkr21