Answer:
x=(-15±√(79) all over 4
Explanation:
You can do this in a few ways but I used the quadratic formula for it. Just plug the numbers into this equation: x= -b ± √(b-4ac) all over 2a.
In this case a=2, b=15, c=-8
Also, there wasn't an "x" behind 15 so I'm doing this by assuming that there is one.