Question

If x-y=1 and x^2+y^2=41 find x+y

Answer 1

x - y = 1

x ² + y² = 41

( x -y )² = x² + y² -2xy


1² = 41 -2xy

xy = 20

now ,

( x -y )² =( x + y )² - 4 xy


1² = (x + y )² -4× 20


81 = ( x + y)²

x+ y = 9

hope it help you


thanks

Answer 2

Answer:

I hope this answer is helping you.

Please mark me brilliant.