Question

xsquare + ysquare = 99, xy = 9 find x-y

Answer 1

Answer:

hey mate there's your answer

given x^2+y^2=99 and xy=9

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

=99-2(9)

=99-18

(x-y)^2=81

(x-y)=(81)^1/2

(x-y)=9

hope it helps you..............

thank you!!!

Answer 2

Answer:

Step-by-step explanation:

(x-y)square=xsquare+ ysquare-2xy

                =99-2(9)

                =99-18

                =81