Question

Gráfico da função f(x)= -x²+2x-1

Answer 1

-x² +2x -1 = 0
x² -2x +1 = 0

Δ = -2² -4
Δ = 0

x = 2/2
x = 1

Xv = -b/2a
Xv = 2/2
Xv = 1

Yv = 0

Answer 2

Resposta:

-x² +2x -1 = 0

x² -2x +1 = 0

Δ = -2² -4

Δ = 0

x = 2/2

x = 1

Xv = -b/2a

Xv = 2/2

Xv = 1

Yv = 0