Question

simplify (3^-7÷3^10)×3^-5
pls help ​

Answer 1

Answer:

Let a=(3

−7

+3

−10

)×3

−5

=3

−12

+3

−15

=3

−12−15

=3

−27

a=

3

27

1

∴(3

−7

+3

−10

)×3

−5

=

3

27

1

Answer 2

Step-by-step explanation:

${3}^{7 \div {3}^{10} } = 1 \div {3}^{3 } \\ 1 \div {3}^{3} \times {3}^{5} = {3}^{2} \\ = 9$