Answer:
6 or -10
Step-by-step explanation:
use the quadratic equation where A=1, b=2, and c=-15.
the quadratic equation is: x= [-b + or - [tex](\sqrt{(b^{2} - 4ac })/2a[/tex] ]
plugging these values in will get you two different answers one being 6 and the other being -10
