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    Question

    src="https://www.ixambee.com/questionimage/Chapter/1743665341-812.JPG" alt="" />
    A 144 Correct Answer Incorrect Answer
    B 146 Correct Answer Incorrect Answer
    C 142 Correct Answer Incorrect Answer
    D 140 Correct Answer Incorrect Answer

    Solution

    a + 1/a = 12 Squaring both sides, (a + 1/a)2 = 122  a2 + 1/a2 + 2 = 144 a2 + 1/a2 = 144 - 2  a2 + 1/a2 = 142

    Practice Next
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    • SSC CGL

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