After 3 years investment of 1200 compounded annually and an interest rate R will yield an amount of 1200 (1+R)Q

Question

write this polynomial in standard form

Answer 1

a(r) = 1200 (1+r)^3

Now just expand the binomial power.

a(r) = 1200(r^3 + 3r^2 + 3r + 1)

and multiply through by 1200