Question

EXPONENTS.

DO NUMBER 1,2,3,4,5.​

Answer 1

Answer:

this will help uu........

Answer 2

Answer:

$1) \: {8}^{16} \div {8}^{25} = {8}^{16} \times {8}^{ - 25} \\ = {8}^{16 + ( - 25)} \\ = {8}^{ - 9} ( {a}^{m} \times {a}^{n} = {a}^{m + n} ) \\ 2) \: { (- 21)}^{10} \times {( - 21)}^{3} = {( - 21)}^{10 + 3} \\ = {( - 21)}^{13} \\ 3) \: { \frac{17}{13} }^{20} \div { \frac{17}{31} }^{11} = { \frac{17}{31} }^{20 - 11} \\ = { \frac{17}{31} }^{9} ( {a}^{m} \div {a}^{n} = {a}^{m - n} ) \\ 4) { \frac{ - 9}{14} }^{3} \times { \frac{ - 9}{14} }^{6} = { \frac{ - 9}{14} }^{3 + 6} \\ = { \frac{ - 9}{14} }^{9} \\ 5) { (- 25)}^{19} \div {( - 25)}^{16} \times {( - 25)}^{42} \\ = { (- 25)}^{19 - 16 + 42} \\ = { \: ( - 25)}^{45}$