Q. 3

  1. 17^0

    17^0 = 1

  2. 4^\frac{5}{2}

    (2^2)^\frac{5}{2} 2^5 32

  3. (0.2)^{-2}

    (\frac{2}{10})^{-2} (\frac{10}{2})^2 \frac{100}{4} 25