Question

diketahui fungsi f(x) = 5x8 tentukan nilai f(-3) + f(4)

Answer 1

f(x) = 5x + 8

f(-3) = 5(-3) + 8

f(-3) = -15 + 8

f(-3) = -7

f(x) = 5x + 8

f(4) = 5(4) + 8

f(4) = 20 + 8

f(4) = 28

• f(-3) + f(4)

= -7 + 28

= 21

Answer 2

Penjelasan dengan langkah-langkah:

mencari fungsi f(-3)

f(x) = 5x + 8

f(-3) = 5(-3) + 8

f(-3) = -15 + 8

f(-3) = -7

--

mencari fungsi f(4)

f(x) = 5x + 8

f(4) = 5(4) + 8

f(4) = 20 + 8

f(4) = 28

--

menjumlahkan nilai fungsi f(x)!

f(-3) + (4)

= -7 + 28

= 21