Ramiya is using the quadratic formula to solve a quadratic equation. Her equation is x =  after substituting the values of a, b, and c into the formula. Which is Ramiya’s quadratic equation?
Quadratic formula: x = 
0 = x2 + 3x + 2
0 = x2 – 3x + 2
0 = 2x2 + 3x + 1
0 = 2x2 – 3x + 1