I'll give it a shot but I don't know how to use the latex codes.
The original problem was Lim (2x – square root of [4x2+x]),
x->∞
Just by plugging in the ∞, I came up with ∞-∞, which I know is indeterminate. So I multiplied in the conjugate of that function and came up with this.
-x...
Just as the title states, I'm working on a problem and have come to negative infinity divided by infinity. Is this an indeterminate form? I know that if they are both positive it is indeterminate, but I can't remember if one being negative makes a difference.