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Second Year maths · C.6 · Square roots and cube roots

Solve equations with squares

Take the root of both sides to undo the power.

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See worked examples
  1. Solve a² = 169. Write the positive solution.

    Answer: 13

  2. Solve n² = 9. Write the positive solution.

    Answer: 3

  3. Solve y² = 4. Write the positive solution.

    Answer: 2

Tip: Take the root of both sides to undo the power.

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