Question

Find a cubic polynomial whose zeroes are 2/3 , -1 and 3 ? Thanks in advance if you have given the right answer . : )

Answer 1

Sum of zeroes=2/3

sum of product of zeroes =-1

Product of zeroes =3

So by formula of cubic polynomial

x^3-(Sum of zeroes)x^2+(Sum of product of zeroes)x-(Product of zeroes)

x^3-2/3x^2-3

3x^3-2x^2-9