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    Question

    What will come in place of (?) in the given expression.

    (14)² – (12)² = ?
    A 77 Correct Answer Incorrect Answer
    B 44 Correct Answer Incorrect Answer
    C 52 Correct Answer Incorrect Answer
    D 40 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Using identity: a² – b² = (a + b)(a – b)

    = (14 + 12)(14 – 12)

    = 26 × 2

    = 52

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