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
