bantuin donggg,penting buat remedial,pake cara yaaa,terimakasihhhh

jawab

12.
(f/g)(x) = (2x² -5x -3)/(2x+1)
(f/g)(x) =  (2x+1)(x-3) /(2x+1)
(f/g)(x) = x - 3

13.
f(x) = 2x-1
g(x)= 2- 3x
fog(x) = f{g(x)}
= f(2-3x)
= 2(2-3x) -1
= 4 - 6x - 1
= 3 - 6x