Diketahui fungsi f(×)= 3×^2 - 2× - 5 nilai f(-1 per 2)

f(x) = 3x^2 - 2x - 5

f(-1/2) = 3(-1/2)^2 - 2(-1/2) - 5
f(-1/2) = 3/4 + 1 - 5
f(-1/2) = 3/4 + 4/4 - 20/4
f(-1/2) = 13/4