you can factor it out but you could also do completeing the square by dividing each number by 6. So it would be x^2+1/3x+2/3=0. Subtract your c value (2/3) to get x^2+1/3x__=-2/3 Then you take 3x (your b value) and divide by 2 and square it. that is your new c value. Then you see what adds upto your b and multiplies to your c and put a radical on both sides and plus or minus your answer. There are many ways to answer this but this way will always be convenient because factoring doesn't always work out. here's the link to it: It's called completeing the square http://www.brightstorm.com/math/algebra/quadratic-equations-and-functions/completing-the-square