Question

If x/y + y/x =-2 then x =
A 0
B y
C -y
D none

Answer 1

Answer:

x/y+y/x=-2

x2+y2/xy=-2

x2+y2=-2xy

x2+y2+2xy=0

(x+y)2=0

x+y =0

x=-y

your answer is c

hope you got it

x2= x square

y2= y square

(x+y)2= (x+y)square

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