2
Explanations:The given expression is:
[tex]y^2\text{ - 5y - 4}[/tex]To get the value of the expression when y = 6, we are going to substitute y for 6 in the given expression:
[tex]6^2-\text{ 5(6) - 4}[/tex][tex]\begin{gathered} \text{Note:} \\ 6^2\text{ = 6 }\times6=36 \\ 5(6)\text{ = 5 }\times6=\text{ 30} \end{gathered}[/tex]The value of the expression then becomes:
36 - 30 - 4
= 6 - 4
= 2
