Answer:

Step-by-step explanation:
First, let me say, I'm not sure what exactly the equation is because it's worded weirdly, but I'm assuming it's
.
(7v+3)(7v+3) [
is the same as (7v+3)(7v+3).]
[When you multiply them, this is the product.]
This is as far as you can simplify without knowing the value of v as far as I know.