Q.

Penjelasan dengan langkah-langkah:

f(x) = x/5 + 2(x) – (4!!)²

f(85) = 85/5 + 2(85) – (4!!)²

f(85) = 17 + 2(85) – (4!!)²

f(85) = 17 + (2 × 85) – (4!!)²

f(85) = 17 + 170 – (4!!)²

f(85) = 17 + 170 – (4 × 2)²

f(85) = 17 + 170 – 8²

f(85) = 17 + 170 – (8 × 8)

f(85) = 17 + 170 – 64

f(85) = 187 – 64

f(85) = 123

f(x) = x/5 + 2(x) – (4!!)²

f(85) = 85/5 + 2(85) – (4!!)²

f(85) = 85/5 + 2(85) – (4.2)²

f(85) = 85/5 + 2(85) – 8²

f(85) = 85/5 + 2(85) – 8(8)

f(85) = 85/5 + 170 – 64

f(85) = 85/5 + 106

f(85) = 85/5 + 530/5

f(85) = 615/5

f(85) = 123

🙂