Solve .
Answer and explanation
Correct answer: D. only
- Step 1: Combine: , so and or . Step 2. Both logarithms need positive arguments, so and is rejected. **Answer: only. Why not the others:** Keeping ignores the domain, alone is the rejected root, and does not solve the equation.
Practise more Algebra, Functions and Models.
Free questions with an explanation for every one, and full timed Studentereksamen STX (Denmark) mock tests.