# How do you write the Vertex form equation of the parabola #y=x^2+4x-7#?

##### 1 Answer

Sep 29, 2016

#### Explanation:

First recall the general vertex form:

Given

The required value of

We are trying to get a squared binomial:

Completing the square in the given equation:

Into proper vertex form:

graph{x^2+4x-7 [-10.84, 9.16, -12.92, -2.92]}