Question

Dada a função quadrática F(x)=3x²-4x+1, determine F(3).

a) F(3)=16
b) F(3)=-2
c) F(3)=24
d) F(3)=15

Answer 1

Resposta:

ITEM (A)

Explicação passo-a-passo:

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$\sf{f(x) = {3x}^{2} - 4x + 1 } \\ \sf{f(3) = 3 {(3)}^{2} - 4(3) + 1} \\ \sf{f(3) = 3 \times 9 - 4(3) + 1} \\ \sf{f(3) = 27 - 4(3) + 1} \\ \sf{f(3) = 27 - 4 \times 3 + 1} \\ \sf{f(3) = 27 - 12 + 1} \\ \sf{f(3) = 15 + 1} \\ \boxed{\red{ \sf{f(3) = 16}}}$

$\mathcal{ATT : ARMANDO}$

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