Mathematics, 11.03.2020 18:36 ohgeezy

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 x2 – (by)2, where b is an integer? \small \frac{1}{2}

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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 pr...

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