SOLUTION: Can you explain to me how a constant is found to add to the binomial so that it becomes the perfect square?
Example: x2(exponent) - 2/3x
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Question 339605: Can you explain to me how a constant is found to add to the binomial so that it becomes the perfect square?
Example: x2(exponent) - 2/3x
Answer by jrfrunner(365) (Show Source): You can put this solution on YOUR website!
Find the coefficient next to the x term, -2/3 in your case
--
take 1/2 of it :
--
Square this term:
this is the amount you must add (and subtract to keep it balanced)
--
in your example:
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