You can put this solution on YOUR website!
First thing is to distribute the understood +1 and -1 that sit in front of the parentesis.
When doing this with +1, you can just drop the parenthesis.
But with the -1 it changes the signs of everything within the parenthesis.
It will look like this:
Combine like terms, Start with the x^2
next the x quantities
and finally the constants DONE!
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