Answer:
x1 = -3, x2 = 5/2
Explanation:
2x^2+x-15=0
2x^2+6x-5x-15=0
2x*(x+3)-5(x+3)=0
(x+3)*(2x-5)=0
x+3=0
2x-5=0
x=-3
x=5/2
