Enrhifo
3\sqrt{11111111111111}\approx 9999999.99999995
Rhannu
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3\sqrt{11111111111111}
Ffactora 99999999999999=3^{2}\times 11111111111111. Ailysgrifennu ail isradd y lluoswm \sqrt{3^{2}\times 11111111111111} fel lluoswm ail israddau \sqrt{3^{2}}\sqrt{11111111111111}. Cymryd isradd 3^{2}.
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