Solve for x by completing the square:
-4x^2-8x-2=0

i got: x=-1+/-the square root of 1
is this answer correct?

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.