We will start solving by moving the 10 over by subtraction and set the polynomial equal to 0 so we can factor.

. I am going to factor out the common 2 to make the numbers a bit smaller for when i put them into the quadratic formula.

with a=1, b=6, c=-5. Put that into the quadratic formula to get

and

which simplifies even further to

. If we simplify that radical it will simplify to

. We can pull the perfect square of 4 out as a 2, leaving us with

. So altogether we have

. The 2 in the denominator will reduce with the other integers (not the radicand!) to give us this as our final answer:

, choice A from above.