how did this equation come.
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THIS EQUATION CAME BE SPLITTING THE MIDDLE TERM.
IT ALSO CAN BE WRITTEN AS,
or,
because,
THE ALL EQUATION ARE SAME AND ARE JUST MODIFIED,SO THAT AN ALGEBRAIC IDENTITY COULD BE USED.
IT ALSO CAN BE WRITTEN AS,
or,
because,
THE ALL EQUATION ARE SAME AND ARE JUST MODIFIED,SO THAT AN ALGEBRAIC IDENTITY COULD BE USED.
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