If $x = -\frac{2}{3}$, then $9x^2 - 3x - 11$ is equal to -

Explanation

If $x = -\frac{2}{3}$ Then, $9x^2 - 3x - 11 = 9(-\frac{2}{3})^2 - 3(-\frac{2}{3}) - 11$ $= 9 \times \frac{4}{9} + 2 - 11$ $= 4 + 2 - 11$ $= 6 - 11 = -5$