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Fill in the blank with a constant, so that the resulting quadratic expression is the square of a binomial.\( x^2 + 22x + \underline{~~~~}.\)

 Jul 6, 2020
 #1
avatar+25880 
+1

complete the square on 'x'     (take 1/2 of 'x' coefficient ....square it and fill in the blank

 

x^2 +22x + 121    = (x+11)2

 Jul 7, 2020

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