Question

(1/2)mũ x+1 - 1/2 = -3/8

Answer 1

`(1/2)^(x + 1) - 1/2 = -3/8`

`=> (1/2)^(x + 1)= -3/8 + 1/2`

`=> (1/2)^(x + 1) = -3/8 + 4/8`

`=> (1/2)^(x + 1) = 1/8`

`=> (1/2)^(x + 1) = (1/2)^3`

`=> x + 1 = 3`

`=>x=3-1`

`=>x=2`

Vậy: `x=2`

Answer 2

`(1/2)^(x+1) - 1/2 = -3/8`

`=> (1/2)^(x+1) = 1/2 -3/8`

`=> (1/2)^(x+1) = 1/8`

=`>  (1/2)^(x+1) = (1/2)^3`

`=> x + 1 = 3`

`=> x =2`

Vậy ...

Answer 3

`(1/2)^(x+1) - 1/2 = -3/8`

`=> (1/2)^(x+1) = 1/2 -3/8`

`=> (1/2)^(x+1) = 1/8`

=`>  (1/2)^(x+1) = (1/2)^3`

`=> x + 1 = 3`

`=> x =2`

Vậy ...

Answer 4

\(\dfrac{1}{2}^{x+1}\) \(-\dfrac{1}{2}\)\(=\dfrac{-3}{8}\)

\(\dfrac{1}{2}^{x+1}=-\dfrac{3}{8}+\dfrac{1}{2}\)

\(\dfrac{1}{2}^{x+1}=\dfrac{1}{8}\)

\(\dfrac{1}{2}^{x+1}=\left(\dfrac{1}{2}\right)^3\)

\(\Rightarrow x+1=3\)

\(\Rightarrow x=3-1\)

\(\Rightarrow x=2\)

Vậy x = 2

#\(haiyuan\)