9 - √81, 5 - √25, - 5 - - √25, 10 - √100, -10 - - √100, 50 - √2500, 20 - √400, 8 - √64, - 8 - - √64, 11 - √121, 13 - √169, 7 - √49, 4 - √16, -7 - - √49, - 4 - - √16, - 9 - - √81, -3 - - √9, 3 - √9, 0 - √0, 1 - √1,

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