Solve .

Answer and explanation

Correct answer: C. or

  1. Step 1: Take the square root of both sides and remember both signs. Step 2. Both and equal 49. **Answer: or . Why not the others:** A single root misses a solution, and divides by 2 instead of taking the root.

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Solve x 2 = 49. | Ylioppilastutkinto (Finnish Matriculation)