Primes 2

For what primes p,q,r is true: p2-(q+r)2=647

Correct answer:

p =  324
q =  321
r =  2

Step-by-step explanation:

647 = 647 1 p2(q+r)2=647 (p  q  r) (p + q + r) = 647 p=324
r=2   Verifying Solution:  t=p2(q+r)2=3242(321+2)2=647

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