SOLUTION: if x+y = 3 and x^2-y^2 = 6 what is the value of the reciprocal of 1/(x-y) a 1/6 b 1/3 c 1/2 d 2 e 3

Question 310274: if x+y = 3 and x^2-y^2 = 6 what is the value of the reciprocal of 1/(x-y)
a 1/6 b 1/3 c 1/2 d 2 e 3
Answer by Edwin McCravy(20063) (Show Source): You can put this solution on YOUR website!
if x+y = 3 and x^2-y^2 = 6 what is the value of the reciprocal of 1/(x-y)
a 1/6 b 1/3 c 1/2 d 2 e 3







This is a trick question, because you ordinarily think of 
as already being a reciprocal and you might be tricked into thinking
that the answer is the reciprocal of 2, and answer c.  However,
the reciprocal of  is  and that is the same as
 and the correct choice is answer d 2.

Edwin

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