Respuesta :
If a quadratic equation is written in the form y=a(x-h)² + k then it is called to be in vertex form. The correct option is A.
What is the vertex form of a quadratic equation?
If a quadratic equation is written in the form
y=a(x-h)² + k
then it is called to be in vertex form. It is called so because when you plot this equation's graph, you will see vertex point(peak point) is on (h,k).
Given that the standard form of the equation of a parabola is y=x²+4x+11.
Now, the vertex form of the equation is,
y = (x + 2)² + 7
y = x² + 4 + 4x + 7
y = x²+4x+11.
Hence, the correct option is A.
Learn more about Vertex Form:
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