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For what real values of $c$ is $x^2 + 16x + c$ the square of a binomial? If you find more than one, then list your values separated by commas.

 Jan 20, 2020
 #1
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Take 1/2 of the middle    16x       1/2 is 8    square it 64

    if c is 64 then

 

(x+8)^2

 Jan 20, 2020

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