Question

If x =root 7+root5 and y=root7-root5 find xy​

Answer 1

final answer will be 2 because √a×√a= a

Answer 2

Step-by-step explanation:

x=√7+√5, y=√7-√5

therefore, xy = (√7+√5)(√7-√5) = 7-5 = 2.

Hope this helps you.