Question

Por favor tem q resolver
SOCORROOOO​

Answer 1

Resposta:

1) D 2) B

Explicação passo-a-passo:

1) R: D

log5(2x-5)=2log10

log5(2x-5)=2.(1)

2x-5=5²

2x=25+5

x=30/2

x=15

2) R: B

144 | 2

72 | 2

36 | 2

18 | 2

9 | 3

3 | 3

1

então 144 = 2.2.2.2.3.3

log144 = log(2.2.2.2.3.3)

log144=log2+log2+log2+log2+log3+log3

log144=4(log2)+2(log3)

log144= 4 . (0,301) + 2 . (0,477)

log144= 1,204 + 0,954

log144= 2,158