Question

7. If x + y = 5 and
xy = 5 ; find :
(i) x - y
(ii) x2 - y2.​

Answer 1

Answer:

x-y is root 5

x 2 - y2= 5 root 5

Step-by-step explanation:

using square identity ( x+y) ^2= x^2 + y^2 + 2xy