2* $2^{n-1}$ -1
You asked:
Evaluate the expression: \(2 \cdot {2}^{n - 1} - 1\)
MathBot Answer:
Evaluated
\(\displaystyle 2 \cdot {2}^{n - 1} - 1 = 2 \cdot 2^{n - 1} - 1 \)
Expanded
\[2 \cdot {2}^{n - 1} - 1 = 2^{n} - 1\]
Factored
\[2 \cdot {2}^{n - 1} - 1 = 2^{n} - 1\]