Learn to subtract functions the easy way

The video tutorial explains how to subtract functions, emphasizing the importance of using parentheses, especially with negative signs. It demonstrates applying the distributive property to rearrange the function in standard form, resulting in the expression F - G = X^2 + X - 4.

How does the positive sign affect the use of parentheses in function operations?

What is the value of G of X as mentioned in the text?