Question

Preciso resolver essas questões com contas, me ajuda aí
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Answer 1

1)

a)

x³ = 8

x = ³√8

x = 2

b)

x² = 1/16

x = √1/16

x = 1/4

2)

a)

-3 × log2 2

-3 × 1

-3

b)

log7 7^(1/2)

1/2 × log7 7

1/2 × 1

1/2

3)

³√12 = 2^(2/3) × 3^(1/3)

logx 2^(2/3) + logx 3^(1/3)

2/3 × logx 2 + 1/3 × logx 3

2/3 × a + 1/3 × b

(2a + b)/3

4)

a)

(x - 3)² = 9

x - 3 = ± 3

x = 3 ± 3

x = 6

b)

3 × (x - 1) = 6

x - 1 = 2

x = 2 + 1

x = 3

c)

2 × logx = log2 + logx

2logx - logx = log2

logx = log2

x = 2