Question

square numbers can be written as the sum of two odd numbers

Answer 1

The answer is true.

It is true that square numbers can be written as the sum of two odd numbers. This square number is always even because the sum of two odd numbers is always an even number.

Example:

The simplest example for this are the two odd numbers  1 and 3.

Sum of the two odd numbers 1 and 3 is 4. 4 is a square number (square of the number 2) and is an even number.