F (x) = -2x² + 4x - 15

f(0) = -2.(0)² + 4.(0) - 15
= 0 + 0 - 15
= -15

f(1) = -2.(1)² + 4.(1) - 15
= -2 + 4 - 15
= 2 -15
= -13

f(2) = -2.(2)² + 4.(2) - 15
= -8 + 8 - 15
= -15

f(3) = -2.(3)² + 4.(3) - 15
= -18 + 12 - 15
= -6 - 15
= - 21

Soalnya apa? Apa yang diminta?