Solving polynomial functions using their graphs | Precalculus | Khan Academy

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Find the values of x (inputs) when a function takes on certain y-values (outputs). https://www.khanacademy.org/math/precalculus-tx/xecf67014514b60db:polynomial-and-power-functions-equations-and-inequalities/xecf67014514b60db:solve-polynomial-equations/v/solving-polynomial-functions-using-their-graphs-precalculus-khan-academy

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