Question

Help! I dont know how to answer this problem! (2+v)^2

Answer 1

(2+v)^2
(2+v) (2+v)
4 + 2v +2v + v^2
$v^{2} +4v +4$

Answer 2

Use:$(a+b)^2=a^2+2ab+b^2$

$(2+v)^2=2^2+2\cdot2\cdot v+v^2=4+4v+v^2$