jika f(x) 3x^2+2x-1 fungsi f(4)=

f(x) = 3[tex] x^{2} [/tex] + 2x - 1
f(4) = 3[tex] (4)^{2} [/tex] + 2(4) - 1
= 3 . 16 + 8 - 1
= 48 + 8 - 1
= 56 - 1
= 55

f(x) = 3x^2 + 2x-1, jika f(4) adalah ...
f(4) = 3(4)^2 + 2(4)-1
f(4) = 55

semoga membantu:)