f(−2) = 3(−2)2 + 2(−2) + 1 = 12 − 4 + 1 = 9. (3) f(0) = 3(0)2 + 2(0) + 1 = 1. (4) f(2) = 3(2)2 + 2(2) + 1 = 12 + 4 + 1 = 17.
確定！ 回上一頁
