Super Bowl LIX kicks off on Sunday. What number is that, though? Here's how to use Roman numerals and why the NFL uses them ...

Any letter or number to the power of zero is equal to 1. This can be seen in the example of \(j^2 \div j^2\). Subtract the powers, so \(j^2 \div j^2 = j^{2 - 2} = j^0\). Any number or letter ...