If p & p^2+8 are both prime numbers, prove that p=3
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p=3 and 3 is a prime number
p^2+8= 3^2+8
= 9+8
= 17
And 17 is a prime number because it can only be divided by 1 and itself.
Therefore, p=3 in the equation p & p^2+8 are prime numbers, is correct
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