Determine a quadratic funtion [tex]f(x) = ax^2 + bx + c[/tex] who graph passes through the point (2,19) and that has a horizontal tangent at (-1,-8).(adsbygoogle = window.adsbygoogle || []).push({});

My attempt at this solution is:

[tex]f(x) = ax^2 + bx + c[/tex]

[tex]f'(x) = 2ax + b[/tex]

LOL its not much but i really have absolutely no idea where to go from here :S

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# Homework Help: Product Rule (Thinking/Inquiry)

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