Question

Determine as raizes e o vértice da função y=x^+x-2

Answer 1

Δ = 1 + 8
Δ = 9

x = -1 +-√9/2
x = -1 +-3/2

x' = -1+3/2
x' = 2/2 = 1

x'' = -1-3/2
x'' = -4/2 = -2

xv = - 1/2

yv = -9/4                    ok