Question 18
Indices and LogarithmsGiven that log3(x − y) = 1 and log3(2x + y) = 2, find the value of x.
- A.1
- B.2
- C.3
- D.4
Show the answer and explanation
Answer: D (4)
Explanation
x − y = 3 and 2x + y = 9. Adding gives 3x = 12, so x = 4.
Given that log3(x − y) = 1 and log3(2x + y) = 2, find the value of x.
Answer: D (4)
x − y = 3 and 2x + y = 9. Adding gives 3x = 12, so x = 4.