Solve the exponential equation .

Answer and explanation

Correct answer: A. and

  1. Step 1: Let . The equation becomes . Step 2. Factor: or . Step 3. ; . **Answer: and . Why not the others:** and confuses with ; and gives ; and gives .

Practise more Advanced Algebra and Polynomials.

Free questions with an explanation for every one, and full timed Riigieksamid (Estonian State Exams) mock tests.