Question

If x= (3+ 1)/(3-1 ) and y= (3-1 )/(3 + 1 ) find the value of x^2+xy-y^2

Answer 1

hope this will help you

Answer 2

Answer:

19/4

Step-by-step explanation:

x²+xy+y²

(3+1/3-1)² + (3+1/3-1 * 3-1/3+1) - (3-1/3+1)²

(4/2)² + 1 - (2/4)²

16/4 + 1 - 4/16

(64+16-4)/16

76/16

19/4