tolong kerjakan yang dilingkari terimakasih (40 poin)

a. f(x) = 2x +3
g(x) = 4x+5
f'(x) = p
= 2(4x+5) + 4(2x+3)
= 8x+10 + 8x +12
= 16x +22

f'(x) = q
= 2(4x+5) - 4(2x+3)
= 8x +10 - 8x -12
= -2