Question

What are the solutions to the equation?

n^2−8n+16=25

Answer 1

n1=9

n2=-1

Explanation:

I took the test and these were the correct answers.

Answer 2

1. You have the quadratic equation n^2−8n+16=25 and to solve it, you must apply the proccedure below:

n^2−8n+16=25
n^2−8n+16-25=0
n^2−8n-9=0

2. When you factorize n^2−8n-9=0, you obtain the following:

(n-9)(n+1)=0

3. Therefore the values of n1 and n2 are shown below:

n1=9
n2=-1