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Domain and range of quadratic functions About Transcript Sal finds the domain and the range of f (x)=3x^2+6x-2. Created by Sal Khan and Monterey Institute for Technology and Education.

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To find the domain of a function, just plug the x-values into the quadratic formula to get the y-output. To find the range of a function, first find the x-value and y-value of the vertex using the formula x =

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