SOLUTION: n2+9=6n

Algebra.Com
Question 184838: n2+9=6n
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!

Start with the given equation.


Subtract 6n from both sides.


Rearrange the terms.


Notice we have a quadratic equation in the form of where , , and


Let's use the quadratic formula to solve for n


Start with the quadratic formula


Plug in , , and


Negate to get .


Square to get .


Multiply to get


Subtract from to get


Multiply and to get .


Take the square root of to get .


or Break up the expression.


or Combine like terms.


or Simplify.


So the only answer is


RELATED QUESTIONS

How do you work... (answered by nyc_function)
m2+m-90 n2-10n+9 n2-n-56... (answered by ReadingBoosters)
Hello, Im trying to help my 15yr old son with his algebra homework. I can remember the... (answered by jim_thompson5910)
algebra is gay please help please help us SIMPLIFY this expression 4n+28 ---------... (answered by josmiceli)
6n(9+-6n/7) (answered by Aaniya)
The nth term of a sequence is n2-6n-4. Find the sum of 3rd and 4th... (answered by fractalier)
n2*n3 (answered by jim_thompson5910)
2/6(6n-9) (answered by Alan3354)
-9(4n-6n)... (answered by rfer)