The given expression is
[tex]n^2 r -wt[/tex]
And it is given r=-1, n=3, t=12, v=0, w=- 1/2 .
And we have to find the value of expression using these values .
So we substitute these values for the variables and evaluate the expression. And on doing so,we will get
[tex]=3^2(-1)-(-1/2)*12
\\
= -9 +6
\\
=-3[/tex]
Therefore the value of the expression with the given values is -3 .
