nilai f(6)+f(-2) adalah

f (x) = 5-4x

f (6 )+ f (-2) = 5-4 (6) + 5-4 (-2)
= 5-24+5+8
= -6

*f(x) = 5 - 4x
= f(6) = 5 - 4(6)
5 - 24
f(6) = (-19)

*f(-2) = 5 - 4(-2)
5 - (-8)
5 + 8
f(-2) = 13

* f(6) + f(-2)
= (-19) + 13
= -6