The function $f\left(x\right)=2{x}^{3}-33{x}^{2}+168x+9$ has one local minimum and one local maximum.

Use a graph of the function to estimate these local extrema.

This function has a local minimum at$x=?$

with output value:

and a local maximum at$x=?$

with output value:

Use a graph of the function to estimate these local extrema.

This function has a local minimum at

with output value:

and a local maximum at

with output value: