Question

i keep getting these wrong can anybody help

Answer 1

The answer is y/18.

Answer 2

9. $(y^{-3})^{6}$
    $(\frac{1}{y^{3}})^{6}$
    $\frac{1}{y^{18}}$

10. $(-h^{4})^{5}$
      $-h^{20}$