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What constant k will make  y2 + 24y + 16 + k the square of a binomial?

 Jul 5, 2018
 #1
avatar+1307 
+2

A binomial is (a+b)^2

when you multiply it out you have

a^2  + 2ab + b^2 

we can plug in y=a

 

24 / 2 = b = 12

12^2 = 144

144 - 16 = 128

thus k = 128

 

 

 

Like if it helped cheeky Thanks!

 Jul 5, 2018
edited by AWESOMEEE  Jul 5, 2018

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