SOLUTION: I need help solving n2 = 9n

Algebra ->  Equations -> SOLUTION: I need help solving n2 = 9n      Log On


   

Question 176326: I need help solving n2 = 9n
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
n%5E2+=+9n Start with the given equation.


n%5E2+-+9n=0 Subtract 9n from both sides.


n%28n-9%29=0 Factor the left side


Now set each factor equal to zero (by using the zero product property):

n=0 or n-9=0

n=0 or n=9 Now solve for n in each case


So the answers are

n=0 or n=9