Question

Ajuda, como resolvo esses 2 exercicios??

Answer 1

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Ola Wagner

2a)

(2/5)/(x - 2) = (6/5)/(x + 4)

(2x + 8)/5 = (6x - 12)/5

2x + 8 = 6x - 12

6x - 2x = 8 + 12

4x = 20

x = 20/4 = 5

2b)

(x + 5)/(x + 8) = 4/5

5x + 25 = 4x + 32

5x - 4x = 32 - 25

x = 7

3a)

⁵√8 = 2^(3/5) 

3b)

16/√32 = 16/√2*16) = 16/(4√2) = 4/√2 = 4√2/2 = 2√2 = 2^(3/2)

pronto