ALGUÉM ME AJUDAAAAAAAA

1) Escreva os valores de a, b ec de cada função quadrática:
a) f(x) = 20x² + 3x - 3
b) f(X) = 6x + x² + 25
c) y=x² + 4x + 9
d) y=x² + 5
2) Dada a função f(x) = x² + 2x + 1, determine:
a) f(2)=
b) f(-2) =
c) f(5) =
d) f(1) =
3) Dada a função f(x) = x² + 2x, determine:
a) f(2)=
b) f(-2) =
c) f(5) =
d) f(3) =
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