Answer:
[tex]-10[/tex]
Step-by-step explanation:
The given expression is
[tex]n^2+5n-4[/tex]
We want to find the value of this expression when [tex]n=-3[/tex].
We just have to put [tex]-3[/tex] wherever we see [tex]n[/tex] in [tex]n^2+5n-4[/tex].
When [tex]n=-3[/tex] is substituted, we get,
[tex]=(-3)^2+5(-3)-4[/tex]
This will give us,
[tex]=9-15-4[/tex]
We simplify to get,
[tex]=-10[/tex]
