Question

Considere a função f(x)=x²-5x+3.
A)Determine as raízes de f
B)calcule f(0),f(2) e f(4).

Answer 1

f(x)=x²-5x+3.

A)

X1 E X2=?

f(x)=x²-5x+3

Δ= 13

Resposta: x1 = (5+√13)/2 e x2 = (5-√13)/2

B)

f(0),f(2) e f(4)

f(x)=x²-5x+3

Resposta:

f(0) = 3

f(2)= -3

f(4)= -1