Answer:
27. The formula of vertex equals to
[tex] - \frac{b}{2a } = \frac{ - 2}{2} = - 1 = x[/tex]
put -1 into y, 1-2+5=4=y
So,the answer of vertex (-1;4)
y = (x + 1)^2 + 4.
Step-by-step explanation:
y = x^2 + 2x + 5
y = (x + 1)^2 - 1 + 5
y = (x + 1)^2 + 4 (Vertex form).
