Question

1- Resolva as seguintes equações exponenciais:

a) 3× = 243

b) 2×= 64

c) 8×= 0,25

d) 2× = 256

e) 3×+¹ = 9

f) 2×+⁸= 512.

g) 3²×-¹= 27

h) 4× = 64


me ajudem por favor!!​

Answer 1

a) 3× = 243

3× = 3⁵ ==> x=5

b) 2×= 64

2× = 2⁶ ==> x=6

c) 8×= 0,25

2³* = 2-²

3x = -2 ==> x = -2/3

d) 2× = 256

2× = 2⁸ ==> x=8

e) 3×+¹ = 9

3×+¹ = 3²

x+1 = 2 ==> x=1

f) 2×+⁸= 512.

2×+⁸ = 2⁹

x+8=9 ==> x=1

g) 3²×-¹= 27

3^2x-1 = 3^3

2x-1= 3

2x=4 ==> x=2

h) 4× = 64

4× = 4³ ==> x=3