SOLUTION: How would I solve the following problem? X^-2-Y^-2 _________ X^-1+Y^-1 I understand the first step is to change each varible into a fraction because of the negative expon

Question 601808: How would I solve the following problem?
X^-2-Y^-2
_________
X^-1+Y^-1

I understand the first step is to change each varible into a fraction because of the negative exponent.

Answer by w_parminder(53) (Show Source): You can put this solution on YOUR website!
I think the question is to simplify

Now using your first step. we get

Taking the LCM of Numerator & Denominator separately, we get

i.e.

i.e.
[Using identity ]
i.e.
This is the required solution, but It can further be written as

i.e.

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