SOLUTION: Factor completely: nx^2+x^2-9n-9 Ok so I know I can't put the -9n and the nx^2 together, but I don't know if I am allowed to put the nx^2 and the x^2 together. This problem just c

Algebra ->  Linear-equations -> SOLUTION: Factor completely: nx^2+x^2-9n-9 Ok so I know I can't put the -9n and the nx^2 together, but I don't know if I am allowed to put the nx^2 and the x^2 together. This problem just c      Log On


   

Question 642606: Factor completely: nx^2+x^2-9n-9 Ok so I know I can't put the -9n and the nx^2 together, but I don't know if I am allowed to put the nx^2 and the x^2 together. This problem just confuses me.... Thanks!
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
nx%5E2%2Bx%5E2-9n-9

%28nx%5E2%2Bx%5E2%29%2B%28-9n-9%29

x%5E2%28n%2B1%29%2B%28-9n-9%29

x%5E2%28n%2B1%29-9%28n%2B1%29

%28x%5E2-9%29%28n%2B1%29

%28x-3%29%28x%2B3%29%28n%2B1%29

So nx%5E2%2Bx%5E2-9n-9 completely factors to %28x-3%29%28x%2B3%29%28n%2B1%29