Answer:
---------------------------
<h3>Given equations</h3>
- v + 8w = 4v and - m + 5n = - 2
<h3>Solve the first equation for v</h3>
- v + 8w = 4v
- 4v - v = 8w
- 3v = 8w
- v = 8w/3
<h3>Solve the second equation for n</h3>
- - m + 5n = - 2
- 5n = m - 2
- n = (m - 2)/5
Answer:this is not an equation
Step-by-step explanation:
I think you mean,

You can use the usual formula,

That in this case is,

Where I have used,
Answer:
NO
Step-by-step explanation:
always look at the number after point
Answer is C. multiply by 3 - square root 5
using a^2 - b^2 = (a + b)(a - b)