Solve x^2 + 2x - 15 = 0
x^2+2x-15 = 0
x^2-3x+5x-15=0
x(x-3) 5(x-3) =0
x+5 = 0 OR x-3=0
x=-5 OR x=3
It can be either
x^2+2x=15x^2+x=15:2x=1,365 I think this is the solution
