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If p is a prime number and up
divides k², then p divides
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Step-by-step explanation:
Actually this is a theorem,
Let p be a prime number. If p divides a^2, then p divides a, where a is a positive integer.
Since, p divides k^2,
Hence p divides k.
You can also prefer the ncert book or reference book to know about this theorem in detail!
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