Find the square of 87 by using observation method

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Find the square of 87 by using observation method

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Melody 1 month 2021-08-13T18:06:47+00:00 1 Answer 0 views 0

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    2021-08-13T18:07:48+00:00

    Answer:

    answer

    9.33

    …………….

    .

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18:9+8+9*3-7:3-1*13 = ? ( )