Question 76392
The given expression is:  


1)  ?t^2+12t+9


Solution: 


We see the that the given expression forms a quadratic equation. 


{{{(2t)^2 + 2(2t)(3) + (3)^2}}} 


{{{ 4t^2 + 12t + 9}}} 


Hence, the missing term is 4 


2)  4w^2-?w+81 


Solution:  


The given expression can be written as:  


{{{ (2w)^2 - 2(2w)(9) + (9)^2 }}} 


{{{ 4w^2 - 36w + 81 }}} 


Hence, the missing term is 36