Question

For any positive integer n, prove that n^2+ n is even integer​

Answer 1

Step-by-step explanation:

this the answer for your question

Answer 2

Answer:

Step-by-step explanation:

Let n be the positive integer.

So, (n^2 +n) = n(n+1)

Since, sum of n numbers = n(n+1)/2

2x sum of n numbers = n(n+1)

We know that any number multiplied by 2 becomes even

Therefore, n(n+1) is an even number.