Question

Construa o grafico da função y = x2 + 5x + 6

Answer 1

y = x² + 5x + 6

a= 1 b= 5 c= 6

Δ= b² -4ac

Δ=5² -4 * 1 * 6

Δ=25 - 24

Δ= 1

x= -b+-√Δ /2a

x= -5+- √ 1 /2*1

x= -5+- 1 / 2

x'=-5+1 / 2 = -4/2 = -2

x''= -5-1 / 2 = -6/2 = -3

Xv = -b/2a = -5/2*1 = -5/2

Yv= -Δ /4a = -1 / 4*1 = -1 / 4