Question

задание на фото……………..

Answer 1

$1)3^{x - 2} = 9 \\ 3^{ x - 2} =3^{2} \\ x - 2 = 2 \\ x = 2 + 2 \\ x = 4$

$2)2^{3x - 5} = 2^{4 - x} \\ 3x - 5 = 4 - x \\ 3x + x = 4 + 5 \\ 4x = 9 \\ x = \frac{9}{4}$

$3)4^{x} = 8 \\ 2^{2x} = 2^{3} \\ 2x = 3 \\ x = \frac{3}{2}$

Answer 2

Ответ:

1) x = 4

2) x = 2 1/4

3) x = 1,5

Объяснение:

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1) 3^x-2 = 9

3^x-2 = 3^2

x - 2 = 2

x = 2 + 2

x = 4

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2) 2^3x - 5 = 2^4 - x

3x - 5 = 4 - x

3x + x = 4 + 5

4x = 9

x = 9/4

x = 2 1/4

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3) 4^x = 8

(2^2)^x = 2^3

2^2x = 2^3

2x = 3

x = 3/2

x = 1,5

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