How do I interprete the estimates given by a quadratic formula in the linear regression tool

I have been using the regression tool and saw that the estimates are normally the coefficients for the equation that you input. However this does not seem to be the case with polynomial equations. As shown in the example

Initially I thought this meant -45791.17X^2 + 13593.55x + 38747.11 was the equation of the model, however this is not the case. For example when X = 53.3I, the fitted point was 34598.84, However using the above equation yields -129470460.8 which is way off. I was wondering how to inteprete these estimates.



(5) Answers