Jawabanmu

2014-08-17T13:57:25+07:00
f(3) = 2 × (3)³ - 5 × (3)² + 3 × 3
f(3) = 2 × 27 - 5 × 9 + 9
f(3) = 54 - 45 + 9
f(3) = 9 + 9
f(3) = 18

Semoga Membantu ^_^