Q. [+19/2] f(x) = 21x + 13(x) f(8) = ..​

f(x) = 21x + 13x

f(8) = 21(8) + 13(8)

= (21 × 8) + 13(8)

= 168 + (13 × 8)

= 168 + 104

= 272

f(x) = 21x + 13(x)

f(8) = 272

Pembahasan

f(x) = 21x + 13(x)

f(8) = 21(8) + 13(8)

f(8) = 168 + 104

f(8) = 272