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