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What is the product of the two integer values of x for which |x^2- 16| is a prime number?

 May 17, 2020
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If  x = 3  then  | (3)2 - 16 |  =  | 9 - 16 |  =  | -7 |  =  7

If  x = -3  then  | (-3)2 - 16 |  =  | 9 - 16 |  =  | -7 |  =  7

 

-3 x 3  =  ...

 May 17, 2020

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