Question

Resolva. Cálculo por favor. ​

Answer 1

Resposta:

Explicação passo a passo:

I

1) 8^x = 8

x = 1

2) 2^x = 1024

1024 = 2^10

2^x = 2^10

x = 10

3) 6^x = 36

36 = 6^2

6^x = 6^2

x = 2

4) 2^x-1 = 32

32 = 2^5

x-1 = 5

x = 5+1

x = 6

5) 4^x-1 = 16

16 = 4^2

x-1 = 2

x = 2+1

x = 3

II

6) 2x + 2 > 0

2x > -2

x > -2/2

x > -1

7) 2x + 6 >= 2

2x >= 2-6

2x >= -4

x >= -4/2

x >= -2

8) x + 3 < 2

x < 2-3

x < -1

9) 2x + 2 <= x + 1

2x - x <= 1 - 2

x <= -1

10) 6x + 5 <= x + 15

6x - x <= 15 - 5

5x <= 10

x <= 10/5

x <= 2