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Fill in the blank with a constant, so that the resulting quadratic is the square of a binomial.  x^2 + 4x + 5x +  ___

 Jul 26, 2021
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$k=3$

 Jul 26, 2021
 #2
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Fill in the blank with a constant, so that the resulting quadratic is the square of a binomial.  x^2 + 4x + 5x +  ___     

 

20.25  

 

The binomial is (x + 4.5)  

 

(x + 4.5)2  =  x2 + 9x + 20.25   

 Jul 27, 2021

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