jika f(x)=3xkuadrat -5x+1 tentukan nilai f(3) dan f(1)

f(x) = 3x² - 5x + 1
maka 
f(3) = 3(3)² - 5(3) + 1
      = 3³ - 15 + 1
      = 27 - 14
      = 13

f(1) = 3(1)² - 5(1) + 1
      = 3 - 5 + 1
      = -2 + 1
      = -1

f(3) = (3x3)^2 - 5x3
f(3) = 9^2 - 15
f(3) = 81 - 15
f(3) = 66

f(1)= (3x1)^2 - 5x1
f(1) = 3^2 - 5
f(1) = 9 - 5
f(1) = 4
maaf kalau salah