Question

Dada a função f(x) = 3x² -4x + 1, determine f(1)?
(A) 0
(B) 5
(C) -5
(D) 1

Answer 1

$\sf\: f(x) = 3x {}^{2} - 4x + 1 \\ \\ \\ \sf\: f(1) = 3 \cdot1 {}^{2} - 4 \cdot1 + 1 \\ \\ \\ \sf\: f(1) = 3 \cdot1 - 4 \cdot1 + 1 \\ \\ \\ \sf\: f(1) = 3 - 4 \cdot1 + 1 \\ \\ \\ \sf\: f(1) = 3 - 4 + 1 \\ \\ \\ \sf\: f(1) = - 1 + 1 \\ \\ \\ \boxed{\sf f(1) = 0}$

Att: Nerd1990