\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
A quadratic function has x-intercepts at \(x=-2\) and \(x=0\). Its graph passes through the point \((-1, -3)\). Find the equation of the function in the form \(y=ax^2+bx+c\).
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