Question Simplify the expression Solution x+y Evaluate x−yx2−y2Use a2−b2=(a−b)(a+b) to factor the expression x−y(x−y)(x+y)Solution x+y Show Solution Find the excluded values Find the excluded values x=y Evaluate x−yx2−y2To find the excluded values,set the denominators equal to 0 x−y=0Move the expression to the right side x=0+ySolution x=y Show Solution