x/x+y + y/x-y
Penyelesaian
x + y = x(x – y) + y(x + y)
x + y x – y (x + y)( x – y)
= x2 – xy + xy + y2
(x2 – y2)
= x2 + y2
x2 – y2
Penyelesaian
x + y = x(x – y) + y(x + y)
x + y x – y (x + y)( x – y)
= x2 – xy + xy + y2
(x2 – y2)
= x2 + y2
x2 – y2