Question

if p is a prime and p divide a square then p divide a where a is _____ integers ​

Answer 1

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$let \: us \: consider \: p \: = 5 \\ and \: a = 25$

$p \: divides \: {a}^{2} \\ = \frac{ {a}^{2} }{p} \\ = \frac{625}{5} \\ = 125$

So a is a positive integer