+0  
 
+1
78
1
avatar+241 

What number goes in the box so that x^2 + 18x + [______] is the square of a binomial? If you find more than one, give your answer as a list.

 Dec 5, 2020
 #1
avatar
+1

eighty one     so the binomial square becomes   ( x + 9)2

 Dec 5, 2020

72 Online Users

avatar
avatar
avatar