f ( x + 2 ) = 8x - 7 nilai f ( 5 ) adalah ...

f(x + 2) = 8x - 7
f(5) = ?
Cari x ny dulu
x + 2 = 5
x = 5 - 2
x = 3

Masukkn k persmaaan
f (3 + 2) = 8(3) - 7
= 24 - 7
= 17

Smgmbntu:)

F(x+2)=F(5)
     x+2=5
         x=5-2
         x=3
F(3+2)=8(3)-7
F(5)=24-7
F(5)=17