Question

If x2y2=13 and xy=6 find the value of
1. x - y
2. x + y

Answer 1

x-y=1
x+y=5
hope this helps

Answer 2

Hey

Here is your answer!

$(x + y) ^{2} = 13 + 12 = 25 \\ \\ (x + y) = \sqrt{25} = 5$

( x - y)2 = 13 -12 =1 ( x2 + y2 -2xy)

x - y =1

Hope it helps