If x y 8 xy 15 July 8, 2019 16 32 64 128 If x y 8 xy 15 then x2 y2 If x y 8 and xy 15 find x2 y2 If x y 8 and xy 15 find x3 y3 If x y 8 and xy 15 find x4 y4 x2y2 If x y 8 and xy 15 find xy If tan x y )= 3 4 and tan xy )= 8 15 If x y 8 and xy 15 4 find the value of xy X+y 8