Question 4
IndicesIf (27x × 31−x)/92x = 1, find the value of x.
- A.1
- B.½
- C.−½
- D.−1
Show the answer and explanation
Answer: B (½)
Explanation
Write everything as powers of 3: 33x + 1 − x − 4x = 30, so 1 − 2x = 0 and x = ½.
If (27x × 31−x)/92x = 1, find the value of x.
Answer: B (½)
Write everything as powers of 3: 33x + 1 − x − 4x = 30, so 1 − 2x = 0 and x = ½.