Question: 18. 8. [-/2 Points] DETAILS HARMATHAP12 9.4.031. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Find the coordinates of points where the graph of f(x) =

18.

18. 8. [-/2 Points] DETAILS HARMATHAP12 9.4.031. MY NOTES ASK YOUR TEACHER

8. [-/2 Points] DETAILS HARMATHAP12 9.4.031. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Find the coordinates of points where the graph of f(x) = -x + 9x2- 15x + 20 has horizontal tangents. As a check, graph f(x) and see whether the points you found look as though they have horizontal tangents. ( x, y ) = (smaller x-value) ( x, y) = (larger x-value) Need Help? Read It Watch It

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