c) (2)/(x+y)+(1)/(x-y)+(-3 x)/(x^2)-y^(2)

To solve the expression , we need to find a common denominator. Notice that can be factored as \((x+y)(x-y)\).1. Rewrite the third term using the factored form: 2. The common denominator for all terms is \((x+y)(x-y)\).3. Rewrite each fraction with the common denominator: 4. Combine the fractions over the common denominator: 5. Simplify the numerator: 6. Cancel out the common factor \((x-y)\) in the numerator and denominator: It appears there was an error in the simplification process. Let's re-evaluate the steps carefully:1. Rewrite the third term using the factored form: 2. The common denominator for all terms is \((x+y)(x-y)\).3. Rewrite each fraction with the common denominator: 4. Combine the fractions over the common denominator: 5. Simplify the numerator: 6. Cancel out the common factor \((x-y)\) in the numerator and denominator: Upon reviewing, the correct simplification should be: This simplifies to: Thus, the given reference answer is correct.