\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Find the equation of the quadratic function whose graph cuts the \(x\)-axis at \(4\) and \(-3\), and which passes through the point \((2,-20)\). Give your answer in the form \(y=ax^2+bx+c\).
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