Question

plss solve the question in above attachment...​

Answer 1

Answer:

a)1/59,049=1.6×10^-5

b)a^-20

Answer 2

Answer:

We know,

${a}^{m} + {a}^{n} = {a}^{m + n}$

so,

${ - 3}^{ - 3} + { - 3}^{ - 2} + { - 3}^{ - 3} = {- 3}^{ - 10}$

Hope it helps you to solve the second sum.Do it yourself!