Question

помогите пооооооожалуйста​

Answer 1

Ответ:

8.

${4}^{x} \times {5}^{x} = 400$

${(4 \times 5)}^{x} = {20}^{2}$

${20}^{x} = {20}^{2}$

$x = 2$

Г)2

9.

${2}^{x} \times {5}^{x} = 0.01$

${(2 \times 5)}^{x} = \frac{1}{100}$

${(2 \times 5)}^{x} = \frac{1}{ {10}^{2} }$

${(2 \times 5)}^{x} = {10}^{ - 2}$

${10}^{x} = {10}^{ - 2}$

$x = - 2$

В)-2

10.

${4}^{x} = 8$

${( {2}^{2} )}^{x} = {2}^{3}$

${2}^{2 x} = {2}^{3}$

$2x = 3| \div 2$

$x = \frac{3}{2}$

$x = 1.5$

Г)1,5