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Fill in the blank with a constant, so that the resulting quadratic expression is the square of a binomial.

 

$x^2 + 8x + \underline{~~~~}$

 Jun 27, 2021
 #1
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x^2 + 8x + 16   =     (x+4)^2                  ( take 1/2 of the 'x' coefficient ...then square it....then add it to the equation)

 Jun 27, 2021

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