Explanation:
The difference of 18 squared and 3 squared is a rational number.
To understand why, let's first calculate 18 squared and 3 squared.
18 squared is equal to 18 multiplied by 18, which equals 324.
3 squared is equal to 3 multiplied by 3, which equals 9.
Now, let's find the difference between these two numbers by subtracting 9 from 324.
324 minus 9 equals 315.
Since 315 can be expressed as the fraction 315/1, it is a rational number.
A rational number is any number that can be expressed as a fraction, where the numerator and denominator are both integers. In this case, the numerator is 315 and the denominator is 1. Therefore, the difference of 18 squared and 3 squared is a rational number