Use the caret mark, "^" (Shift-6) to indicate raising to a power. I'm presuming you meant:
which can be rendered using a standard keyboard by:
Enough housekeeping, let's do the math.
First get rid of the parentheses. In front of the first set of parentheses there is an understood coefficient of 1. Multiplying anything by 1 doesn't change anything, so just drop the parentheses altogether. In this case you also have an understood coefficient of 1 in front of the second set of parentheses -- they go away too:
Terms are the chunks that are separated by + and - signs. You can combine like terms. Like terms have the same variable(s) raised to the same power(s). The
All together you should have:
John