Question

if x+y=5 and xy=6 find the value of x-y.​

Answer 1

Step-by-step explanation:

x-y = 7

x^2+y^2+2(xy)

x^+y^2+12

divide the equation with (-)

x^2-y^2=12

and the rest in the above attachment

Answer 2

(x+y)²=x²+y²+2xy

25=x²+y²+2×6

25-12=x²+y²=13

(x-y)²=x²+y²-2xy

13-2×6=1

x-y=1