college algebra
posted by julez .
Solve the following equation in the real number system. Please show all of your work.
2x^33x^214x+15=0

I can see right off that x = 1 works
2314+15 = 0 sure enough
so divide by (x1)> 2x^2x1
(2x+1)(x1)
so x = 1 again and x = 1/2