expressions. Regard all variables as non-zero. \( \begin{array}{ll}\text { b) } 2 a^{4} \times 5 a^{3} & \text { c) } 7 x^{4} \times 2 x^{5} \times x^{3} \\ \text { e) } \frac{a^{9}}{a^{5}} & \text { f) } \frac{p^{8} q^{5}}{p q^{3}} \\ \text { h) } 4 m^{2} n^{3} \times 5 m n^{5} & \text { i) } \frac{m^{11} n^{3}}{n^{2} m^{6}} \\ \text { k) }\left(m^{6}\right)^{4} & \text { 1) }\left(a^{2} b^{5}\right)^{3} \\ \text { n) }\left(3 k^{4}\right)^{2} & \\ \text { p) } \frac{36 a^{9} b^{3} c^{2}}{12 a^{6} b^{3}} \\ \text { r) }\left(2 a^{3} b^{4}\right)^{0} \times\left(2 a^{5} b^{3}\right)^{2} & 2 k^{2} m \times 8 k^{9} m^{2} \\ \text { v) } 40+3 \times(-2)^{0}+6(8-3)^{0} \\ \text { x) } \frac{18 x^{6} \times y^{3}}{9 x^{4} y}\end{array} \)