Tolong bantu jawab kak dan tolong jawab dengan benar​

1.

f(x) = x – 4

(f(x))^2 = x^2 – 4^2

= x^2 – 16

3f(x) = 3(x) – 3(4)

= 3x – 12

f(3) + (f(3))^2 – 3f(3)

= (3-4)+(3^2-16) – (3.3 – 12)

= (-1) + (-7) – (-3)

= -5