Rewrite the expression using the negative exponent rule .

Rewrite the expression using the negative exponent rule .

To write as a fraction with a common denominator, multiply by .

To write as a fraction with a common denominator, multiply by .

Write each expression with a common denominator of , by multiplying each by an appropriate factor of .

Multiply and .

Multiply and .

Reorder the factors of .

Combine the numerators over the common denominator.

Multiply the numerator by the reciprocal of the denominator.

Multiply by .

Simplify 1/(x^-2+y^-2)