Question

(1/2) mũ 2x-1 = 1/8

 

Answer 1

\(\left(\frac{1}{2}\right)^{2x-1}=\frac{1}{8}\)

\(\left(\frac{1}{2}\right)^{2x-1}=\left(\frac{1}{2}\right)^3\)

\(\Rightarrow2.x-1=3\)

\(2.x=3+1\)

\(2.x=4\)

   \(x=4:2\)

  \(x=2\)

Vậy \(x=2\)

Chúc bạn học tốt !!!

Answer 2

\(\left(\frac{1}{2}\right)^{2x-1}=\frac{1}{8}\)

\(\left(\frac{1}{2}\right)^{2x-1}=\left(\frac{1}{2}\right)^3\)

\(\Rightarrow\text{ }2x-1=3\)

\(2x=3+1\)

\(2x=4\)

\(x=4\text{ : }2\)

\(x=2\)

Answer 3

\(\left(\frac{1}{2}\right)^{2x-1}=\frac{1}{8}\)

\(\left(\frac{1}{2}\right)^{2x-1}=\left(\frac{1}{2}\right)^3\)

\(\Rightarrow\text{ }2x-1=3\)

\(2x=3+1\)

\(2x=4\)

\(x=4\text{ : }2\)

\(x=2\)

Answer 4

\(\left(\frac{1}{2}\right)^{2x-1}=\frac{1}{8}\)

<=> \(\left(\frac{1}{2}\right)^{2x-1}=\left(\frac{1}{2}\right)^3\)

<=> 2x - 1 = 3

<=> x = 2

Answer 5

then cìu mn nh

Answer 6

(1/2)^2x-1=1/8

(1/2)^2x-1=(1/2)³

2x-1=3

2x=3+1

2x=4

  x=4:2

  x=2

vậy x=2