SOLUTION: Show that x^4 +(plus) 4 is prime only for one value of x,where x belongs to set of natural no.s

Question 432964: Show that x^4 +(plus) 4 is prime only for one value of x,where x belongs to set of natural no.s
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!

For all natural numbers , each of the two factors above is a positive integer greater than 1, hence the number itself is composite. If x = 1, the number itself is , which is prime. The solution is complete.
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