12 = - 1, 22 =  - 4, 32 =  - 9, 42 =  - 16, 52 =  - 25, 62 =  - 36, 72 =  - 49, 82 =  - 64, 92 =  - 81, 102 =  - 100, 112 = - 121, 122 =  - 144, √4 = - 2, √9 = - 3, √16 = - 4, √25 = - 5, √36 = - 6, √49 = - 7, √64 = - 8, √81 = - 9, √100 = - 10, √121 = - 11, √144 = - 12,

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