Verified answer

Ответ:

1. Д

2. Г

3. Б

4. А

Объяснение:

1.

[tex] {81}^{2} \div {( \frac{1}{3}) }^{ - 7} = {( {3}^{4} )}^{2} \div {3}^{7} = {3}^{8} \div {3}^{7} = 3[/tex]

2.

[tex] {9}^{ - 8} \times {27}^{5} = {( {3}^{2} )}^{ - 8} \times {( {3}^{3} )}^{5} = {3}^{ - 16} \times {3}^{15} = {3}^{ - 1} = \frac{1}{3} [/tex]

3.

[tex] = \frac{ {3}^{ - 2} \times {3}^{ - 15} }{ {3}^{ - 14} } = \frac{ {3}^{ - 17} }{ {3}^{ - 14} } = {3}^{ - 3} = \frac{1}{27} [/tex]

4.

[tex]... = {4}^{ - 8} \times {4}^{8} \times {3}^{8} \times {3}^{ - 5} = {4}^{0} \times {3}^{3} = 1 \times 27 = 27[/tex]