First Derivative Test for Relative

Please see screen shot below, trouble typing question in the right formatLet / ( 5 ) = 2 + 8 2 + 162 + 4( 2 )Find the open interval ( s ) on which ( or ) is increasing and decreasing using information ofained from the first derivative of( b )Using your work from part ( a ) and the First Derivative Test for Relative ( Local ) Extremefind the I – values of all relative ( local ) extreme and note if the I – value leads to a relative max or min .