( 6-5 ) 1 2+ 1 extrema at x = 5. 19) Show that x = 5 is a critical number of the function g(x) = 2 + (x -5)' but g does not have a local ( 3- 5 ) = (2 N 9(x)=0+ 3 (x-5) (1) ( 2-5) ( ) = 31 x - 5 ) ( - 3 ) 2