If two of the four expressions x + y, x + 5y, x - y, and 5x - y are chosen at random, what is the probability that their product will be of the form of x^2 - (by) ^2, where b is an integer?

A) 1/2

B) 1/3

C) 1/4

D) 1/5

E) 1/6

Question

Jr

28 August, 16:59

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Aarav Lane · Answer 1

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If two of the four expressions x + y, x + 5y, x - y, and 5x - y are chosen at random, what is the probability that their product will be of the form of x^2 - (by) ^2, where b is an integer?A) 1/2B) 1/3C) 1/4D) 1/5E) 1/6