51x52=Y

^F (50x50)+ ^O (50x2) + ^I (1x50) + ^L (1x2) = Y

Solve the equations in the parentheses first. Then add them together separately.

This is the FOIL method. First, outside, inner, last. You break the equation down into smaller equations that are easier to handle and then add them all together. That process it’s self is called factoring. You can look up videos on factoring to help you understand the concept of FOILing better.