As part of a lab for physics, we need to solve a series of 3 quadratic equations for a, b, and c. The equations are just $\displaystyle ax^2+bx+c=y for x1, x2, and x3$. The three x values I'm using are 31.818, 62.727, and 93.864. The three y values which correspond to the x values are 25.909, 41.364, and 46.591. I'm lost.