Enrhifo
2\sqrt{102}\approx 20.199009877
Rhannu
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2\sqrt{102}
Ffactora 408=2^{2}\times 102. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 102} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{102}. Cymryd isradd 2^{2}.
Enghreifftiau
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