Question

9th class question chapter 1 number system
​

Answer 1

please see the attachment

Answer 2

${( \frac{1 }{ {x}^{ - a} }) }^{3} \div {( \frac{1}{x} )}^{3a} \\ { ({x}^{a}) }^{3} \times {x}^{3a} \\ {x}^{3a} \times {x}^{3a} \\ {x}^{3a + 3a} = {x}^{6a}$