Question

Square the binomial (r+s). what is the result?

a) r^2+s^2
b) r^2+2rs+s^2
c) 2r+2s
d) r^2+rs+s^2

Answer 1

answer is b)

`{(r + s)}^(2) = {r}^(2) + 2rs + {s}^(2)`