How do you simplify (x/x^2-y^2)+(y/x^2-y^2) ?

Question

anonymous · Answer

i think you add like terms.

anonymous · Answer

$$x/x ^{2} - y ^{2} + y/x ^{2} - y ^{2}$$$$x/x ^{2} + y/x ^{2}- y ^{2}  - y ^{2}$$$$(x+y)/x ^{2} -2y ^{2}$$

anonymous · Answer

@rachaellla  is correct, in this case you have the same denominator (x^2-y^), so you simply add the numerator and the result should be like @stargirlzilin has done above

anonymous · Answer

@stargirlzilin That's what I did/got, but it isn't one of the choices

anonymous · Answer

@stargirlzilin  is that 2 in your answers denominator supposed to be there?

anonymous · Answer

WAIT OH I typed the question wrong it's - not +

anonymous · Answer

@snowflakepixie  remember the denominator is a difference of two squares: ie 
$$x ^{2}-y ^{2} = (x+y)(x-y)$$,
now can you simplify further?

anonymous · Answer

GAH I'M CONFUSING MYSELF SO MUCH

anonymous · Answer

$$(x+y) / (x ^{2}- y ^{2}) = (x+y) / (x+y)(x-y) = 1/(x-y)$$

anonymous · Answer

Alright alright one minute...
it's |dw:1343858202863:dw|