Question

If n = 5 what does (4n - 2)(7-n) equal?

Answer 1

Given

`(4n-2)(7-n)`

To evaluate this expression for n=5, the first step is to replace it with the given value for n.

`(4\cdot5-2)(7-5)`

Then you have to solve the operations inside both parentheses:

`\begin{gathered} (20-2)(2) \\ (18)(2) \end{gathered}`

Once solved the operation inside the parentheses terms, you can multiply the results

`18\cdot2=36`

This means that (4n-2)(7-n) equals 36 when n=5