Find a polynomial function of degree 3 with real coefficient that satifies the given conditions

Question

Zero of -3 having multiplicity 3; f(3)=36

Answer 1

f(x) = k(x+3)^3

36 = k(3+3)^3

36 = k(3)^3

36 = k(27)

k = 36/27 = 4/3

f(x) = (4/3)(x+3)^3