I have been trying to find the values of the coefficients for the least squares parabola:

y = a + bx + cx^2

I have taken partial derivatives wrt a, b, c and now have three equations, but I don't know what to do next...any suggestions? Have you solved this before?

thank you very much!!

I can help with LaTeX in exchange for help thank you very much

It's a system of three equations with three unknowns (a, b, c). Everything else is taken as a known fixed value. If I told you to solve for a, b, c given the following equations could you do it?