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The number of pairs of positive integers (x,y) where x and y are prime numbers and x 2 -2y 2 =1 is.........

The number of pairs of positive integers (x,y) where x and y are prime numbers and x2-2y2=1 is.........

Grade:12

1 Answers

anandpal shekhawat
8 Points
12 years ago
Hi, according to me it has only one pair (3,2) as y = +-[(x^2 -1)/2]^1/2 checking for eqn. we got (x,y) = (3,2)

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