[Nightmare]

Well, solving for x on the second one is easy.

2x + 1 = 0
* the reason why there is only one equation is because x is the same for both, seeing as 2x+1 is squared.
Subtract one. 2x = -1
Divide by two. x = -1/2

The other one would be done similarly.
Set both equal to zero.
x+5=0 and x-0=0
You'd subtract five for the first one and add zero on the second
to get x=-5 and x=0.