Question 788431
(f-g)(x) = f(x) - g(x)


(f-g)(x) = ( f(x) ) - ( g(x) )


(f-g)(x) = ( 8x-2 ) - ( 2x-4 )


(f-g)(x) =  8x-2  - 2x + 4


(f-g)(x) = ( 8x - 2x ) + ( -2 + 4 )


(f-g)(x) = ( 8 - 2 )x + ( -2 + 4 )


(f-g)(x) = (6)x + (2)


(f-g)(x) = <font color="red">6x + 2</font>