Find the relative extremum of f(x)=-3x +30x+8 by applying the First Derivative Test. 3x2 + 30x + 8 by applying the First Derivative Test. Find

Find the relative extremum of f(x)=-3x² +30x+8 by applying the First Derivative Test.

3x2 + 30x + 8 by applying the First Derivative Test. Find ffe relative extremum of f (x)