(i) If x = -1/3 is a zero a zero of given polynomial p(x) = 3x + 1, then p(-1/3) should be 0.
Here, p(-1/3) = 3(-1/3) + 1
= -1 + 1 = 0
Therefore,x = -1/3 is a zero of the given polynomial.
(ii) If x = 4/5 is a zero of polynomial p(x) = 5x − π , then p(4/5) should be 0.
Here,p(4/5) = 5(4/5) - π
= 4 - π
As p(4/5) ≠ 0.
Therefore, x = 4/5 is not a zero of the given polynomial.