Question

3^x+1= 27
(2x-1)³=8

Answer 1

1) \(3^{x+1}=27\)

\(\Leftrightarrow3^{x+1}=3^3\)

\(\Leftrightarrow x+1=3\Leftrightarrow x=2\)

2) \(\left(2x-1\right)^3=8\)

\(\Leftrightarrow\left(2x-1\right)^3=2^3\)

\(\Leftrightarrow2x-1=3\Leftrightarrow2x=4\Leftrightarrow x=2\)

Answer 2

3^x+1=27
3^x+1=3³
x+1=3
x=2
(2x-1)³=8
(2x-1)³=2³
2x-1=2
2x=3
x=3/2

Answer 3

\(3^{x+1}=27\)

\(\Leftrightarrow x+1=3\)

hay x=2

\(\left(2x-1\right)^3=8\)

\(\Leftrightarrow2x-1=2\)

hay \(x=\dfrac{3}{2}\)