Problem

이차함수 $f(x)=3 x^{2}-8 x+4$ 에 대하여 $f(1)+f(4)$ 를 구하면? (1) -12 (2) -6 (3) -1 (4) 15 (5) 19

Solution

Step 1 :이차함수 $f(x)=3 x^{2}-8 x+4$ 에 대하여 $f(1)$ 과 $f(4)$ 를 구하면

Step 2 :f(1) = 3(1)^2 - 8(1) + 4 = -1

Step 3 :f(4) = 3(4)^2 - 8(4) + 4 = 20

Step 4 :f(1) + f(4) = -1 + 20 = 19

Step 5 :\(\boxed{19}\)

From Solvely APP
Source: https://solvelyapp.com/problems/16307/

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