SOLUTION: If {{{x^2+y^2=85}}} and xy=5, what is the value of {{{(1/x-1/y)^2}}}? A) 5 B) 75 C) 80 D) 3

SOLUTION: If {{{x^2+y^2=85}}} and xy=5, what is the value of {{{(1/x-1/y)^2}}}? A) 5 B) 75 C) 80 D) 3

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Question 1043307: If and xy=5, what is the value of ?
A) 5
B) 75
C) 80
D) 3
Answer by ikleyn(52803) (Show Source): You can put this solution on YOUR website!
.
If and xy=5, what is the value of ?
A) 5
B) 75
C) 80
D) 3
~~~~~~~~~~~~~~~~~

 =  =  = 

     replace  by 85, and replace xy by 5. You will get

=  =  = 3.

Answer.  3.  Option D).

Solved
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