Question

Помогите решить пожалуйста ❤️​

Answer 1

Ответ:

= - 2

Объяснение:

$25 \times {7}^{ - log_{ \sqrt{?} }5 } - {8}^{ \frac{1}{3} \times log_{2}3} =$

1).

${7}^{ - log_{ \sqrt{7} }5} = {7}^{ - log_{ {7}^{ \frac{1}{2} } }5} = {7}^{ - (1 \div \frac{1}{2}) \times log_{7}5 } = {7}^{ - 2 \times log_{7}5} = {7}^{ log_{7} {5}^{ - 2} } = {7}^{ log_{7} \frac{1}{25}} = \frac{1}{25}$

2).

${8}^{ \frac{1}{3} \times log_{2}3 } = {( {2}^{3} )}^{ \frac{1}{3} \times log_{2}3} = {2}^{3 \times \frac{1}{3} \times log_{2}3 } = {2}^{(1 \times log_{2}3)} = {2}^{ log_{2}3 } = 3$

3).

$25 \times \frac{1}{25} - 3 = 1 - 3 = - 2$