Question

Resolva Passo a Passo....

x^2 = 4/5 x + 1/5

Answer 1

x^2 = 4x/5 + 1/5

5x^2 = 4x + 1

5x^2 - 4x - 1 = 0

os coeficientes

a = 5, b = -4, c = 1

delta

d = 16 + 20 = 36

as raízes

x1 = (4 + 6)/10 = 1

x2 = (4 - 6)/10 = -1/5

o vértice

Vx = -b/2a = 4/10 = 2/5

Vy = -d/4a = -36/20 = -9/5

o gráfico