Question

$8^{x+1}$=0,125
Объясните подробно, как решать.

Answer 1

$8 {}^{x + 1} \times 0.125 = 2 {}^{3x + 3} = 2 {}^{ - 3} = 3x + 3 = - 3 = 3x = - 3 - 3 = 3x = - 6 \\ x = - 2$

Answer 2

8^(x+1)=0,125
8^(x+1)=125/1000
8^(x+1)=1/8
8^(x+1)=8^(-1)
x+1=-1
x=-2