Diketahui fungsi kuadrat f(x) = x^2 - 2x + 3. Nilai f(x) saat x = -1 dan x = 1 adalah

f(x) = x^2 - 2x + 3
=> x = -1
f(-1) = (-1)^2 - 2(-1) + 3
= 1 +2 + 3
= 6
=> x = 1
f(1) = (1)^2 - 2(1) + 3
= 1 - 2 + 3
= 2