Question 20
Indices and LogarithmsSimplify 8n × 22n ÷ 43n.
- A.2−n
- B.21−n
- C.2n
- D.2n+1
Show the answer and explanation
Answer: A (2−n)
Explanation
Write everything in base 2: 23n × 22n ÷ 26n = 23n + 2n − 6n = 2−n.
Simplify 8n × 22n ÷ 43n.
Answer: A (2−n)
Write everything in base 2: 23n × 22n ÷ 26n = 23n + 2n − 6n = 2−n.