Question

P is an odd number.
Explain why p^2 +1 is always even number

Answer 1

every odd number that squares up and add 2 will give an even answer

Answer 2

see explanation

Explanation:

Given that p is an odd number , then

p² is always an odd number

Adding 1 to an odd number gives an even number.

So p² + 1 is always even for p odd