What is the solution of ?

Answer and explanation

Correct answer: A.

  1. Step 1: Combine: , so , i.e. . Step 2. Roots are and ; logarithms need positive arguments, so and only works. **Answer: . Why not the others:** makes the arguments negative; gives ; ignores the second logarithm.

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What is the solution of log 2 x… | UNI Admission Exam (Peru)