Explanation:
the first term can be squared into a perfect square.
the last term can be squared into a perfect square.
the middle term is: +/-2(squareroot of the first term)(squareroot of the last term)
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Explanation:
the first term can be squared into a perfect square.
the last term can be squared into a perfect square.
the middle term is: +/-2(squareroot of the first term)(squareroot of the last term)