Question

I just need help on 19r=-1, n=3, t=12, v=0 and w=-1/2

Answer 1

`9r^2+(n^2-1)t`

To evaluate the above expression, let's substitute the variables with their corresponding equivalent.

r = -1, n = 3, and t = 12

`9(-1)^2+(3^2-1)(12_{})`

The first thing to do is to simplify/solve the numbers with the exponents.

`9(1)+(9-1)(12)`

Next, eliminate the parenthesis by applying the operation connected to it.

`\begin{gathered} 9+8(12) \\ 9+96 \\ 105 \end{gathered}`

Therefore, the answer to the above expression given the values of the variables is 105.