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      Question

      If (a + b) = 9 and ab = 14, find the value of (a² +

      b²).
      A 42 Correct Answer Incorrect Answer
      B 62 Correct Answer Incorrect Answer
      C 53 Correct Answer Incorrect Answer
      D 22 Correct Answer Incorrect Answer

      Solution

      ATQ, (a + b)² = 9² Or, a² + b² + 2ab = 81 Or, a² + b² + 28 = 81 So, a² + b² = 81 - 28 = 53

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