Question

Convert the quadratic function from vertex form to standard form:
g(x) = { (x + 2)2 – 8

Answer 1

y=x^2-4x+12

Explanation:

Vertex to standard form is simple once you know how to look at it.

Standard form is x^2+bx+c=y.

Vertex form is f(x) = a(x – h)2 + k

So we know h=-2 and k =8.

Then, you need to graph it.

Since the y intercept is 12, 12=c.

b=k/h so b=8/-2 or -4. So -4=b