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    Question

    If (a + b) = 11 and ab = 25, then find (a² + b²).

    A 71 Correct Answer Incorrect Answer
    B 58 Correct Answer Incorrect Answer
    C 32 Correct Answer Incorrect Answer
    D 42 Correct Answer Incorrect Answer

    Solution

    ATQ, (a + b)² = 11² Or, a² + b² + 2ab = 121 Or, a² + b² + 50 = 121 So, a² + b² = 121 - 50 = 71

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