- Thread starter
- #1

#### karush

##### Well-known member

- Jan 31, 2012

- 2,817

isolate $x$

rewriting

$m^2-2 m x-n^2 x^2+x^2 = 0$

$m(m-2x)-x^2(n-1)(n+1)=0$

I set this to 0 thinking I could factor by grouping but not..

So seem to be stuck on how to to isolate x

the books answere to this is $\frac{m}{1-n},\frac{m}{1+n}$

thnx ahead,