Question

Encontre os valores da vértice F(x) =x"ao quadrado" + 4x +3

Answer 1

F(x) = x^2 + 4x +3
a= 1; b = 4; c = 3
∆ = b^2-4ac
∆ = 4^2 - 4.1.3
∆ = 16 - 12
∆ = 4

Xv = - b/2a = - 4/2.1 = -4/2 = - 2
Yv = - ∆/4a = - 4/4.1 = -4/4 = - 1

Resp.-
Xv = - 2; Yv = - 1