√64-√p+√q=9 find p+q -√p+√q=9-8 -√p+√q=1 Moreover p and q are natural numbers. After Squaring we have: p+q-2*sqrt(pq)=1 Then q=9, p=4.
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Dear visitor In this expression p+q-sqrt (pq) the factor 2 is missing, actually it should be p+q-2*sqrt (pq).& Thanks for correcting us!
i don't get it... because when we subst 9 and 4 to p+q-sqrt (pq) is not wqual to 1
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