22 + 3 = 7
Since 2 is the only even Prime number, this is the only number for which this holds true.
No. it's not a prime number when x = 40, 41, 81,82 ...
When the sum of a number plus 3 is squared, it is 11 more than the sum of the number plus 2 when squared.
Yes, it is 2
Two is a prime factor of that equation.
2
3
4
4
4
2
2
2