Respuesta :

In order to evaluate this expression, we plug in 3 where ever we see n.  The equation becomes:

[tex] 3^{2}-7*3-4=9-21-4=-16 [/tex]

So, this expression is equal to -16.
(3)^2 - 7(3) - 4


9 - 21 - 4 


-16
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