Homework Help: ALGEBRA

Posted by Katie on Tuesday, April 15, 2008 at 7:51pm.

How do you solve the rational equation:

(n/n-2)+(n/n+2)=(n/n^2-4)

I know that the LCD of the equation is (n+2)(n-2) because that is what you get when you factor out the n^2-4 in the last part of the question. I thought I did it right until I reached the end where I don't know how to solve it.

ALGEBRA - Reiny, Tuesday, April 15, 2008 at 8:02pm
So why not multiply each of the three terms by that LCD that you found to get

n(n+2) + n(n-2) = n

expand and solve as a quadratic.
I factors very nicely and has 2 simple answers.
ALGEBRA - Katie, Tuesday, April 15, 2008 at 8:06pm
That's just it. I don't know how to factor it out because i keep getting 2n^2-n=0
- ALGEBRA - Reiny, Tuesday, April 15, 2008 at 8:25pm
  2n^2 - n = 0 is correct.
  Now take out a common factor
  
  n(2n-1) = 0
  n=0 or n = 1/2

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