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    Question

    If (a + b) = 7 and ab = 11, then find the value of (a²

    + b²).
    A 27 Correct Answer Incorrect Answer
    B 18 Correct Answer Incorrect Answer
    C 32 Correct Answer Incorrect Answer
    D 12 Correct Answer Incorrect Answer

    Solution

    ATQ, (a + b)² = 7² Or, a² + b² + 2ab = 49 Or, a² + b² + 22 = 49 So, a² + b² = 49 - 22 = 27

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