Question

write a polynomial whose zeros are 2/3 and - 1/3​

Answer 1

3 x square - 2 X + 1 is the answer. of your question

Answer 2

Let, alpha = 2/3

Beeta=-1/3
Now,
alpha + beeta = [2+(-1) ]/3 =1/3
and
alpha × beeta = -2/3