Question

Evaluate 2^1 + 2^0 + 2^‐1.

Answer 1

\(\Large \color{purple}{\rightarrow 2 + 1 + {1 \over 2} }\)

\(\Large \color{purple}{\rightarrow 3 + {1 \over 2} }\)

\(\Large \color{purple}{\rightarrow 3{1 \over 2} }\)