Locate and describe the relative extrema then sketch the graph of
is the theory correct?
After , you wrote , which is false. Expand the left-hand side of the false equation to see why.
Instead, divide the equation by :
Then, factor the right-hand side of the equation:
Set each factor on the right-hand side of the equation equal to 0.
Solve each equation in terms of x. The solutions are the critical values.