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ky - k/y = m: find y^2 + 1/y^2

The same question, asked 2 times: 19 Jul 2023 S2*, 24 Jul 2023 S4. Every wording below, oldest first.

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  1. Question 1

    19 Jul 2023 S2

    68
    If (3y−3y)=5\left(3y - \frac{3}{y}\right) = 5, find the value of (y2+1y2)\left(y^2 + \frac{1}{y^2}\right).

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  2. Question 2

    24 Jul 2023 S4

    67
    If (4y−4y)=13\left(4y - \frac{4}{y}\right) = 13, find the value of (y2+1y2)\left(y^2 + \frac{1}{y^2}\right).

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