Question

Let p be a prime number . If p divides a² , then p divides a , where a is a positive integer .
Prove .​

Answer 1

Step-by-step explanation:

Let us consider p=5,a=25

p divides a

2

=

p

a

2

=

5

625

=125

p divides a,

p

a

=

5

25

=25

So, a is a positive integer.

Answer 2

Answer:

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