algebra
posted by helen .
use the binomial theorem to expand the binomial (s+2v)^5

The values that we need from Pascal's triangle are
1 5 10 10 5 1
(s+2v)^5
= s^5 + 5(s^4)(2v) + 10(s^3)(2v)^2 + 10(s^2)(2v)^3 + 5(s)(2v)^4 + (2v)^5
= ..
I will leave the algebraic simplification up to you