Which of the following is the zeros of the polynomial 9x² - 4: 

Concept -

let the polynomial be p(x) then p(x) = 0 gives you the zeros of the polynomial.

Explanation -

We have the polynomial  9x2 - 4

Now for the zeros of the polynomial -

 9x2 - 4  = 0

⇒  9x2 = 4

⇒  x2 = 4/9

⇒ \(x = \frac{2}{3} \ \ and \ \ x = \frac{-2}{3}\)

Hence option (1) is true.