You can put this solution on YOUR website! One must examine the shown expression and think about what can be done and understood, maybe for a few seconds; or maybe for a few minutes.
After thinking a while,...
I'm using lower case variables instead of upper case.
First polynomial factor: ;
Second polynomial factor: ;
Factor a from part of the second polynomial factor,
Indicate a grouping in the first polynomial factor,
Recognize a form leading to Difference Of Squares, although a little more complicated than what you usually find:
The multiplication is recognizably .
The resulting multiplication of that is not likely a well-recognized form.
It becomes .
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