Enrhifo
9\sqrt{2}\approx 12.727922061
Rhannu
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\frac{12\sqrt{2}}{\left(\sqrt{2}\right)^{2}}+\sqrt{18}
Mae'n rhesymoli enwadur \frac{12}{\sqrt{2}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{2}.
\frac{12\sqrt{2}}{2}+\sqrt{18}
Sgwâr \sqrt{2} yw 2.
6\sqrt{2}+\sqrt{18}
Rhannu 12\sqrt{2} â 2 i gael 6\sqrt{2}.
6\sqrt{2}+3\sqrt{2}
Ffactora 18=3^{2}\times 2. Ailysgrifennu ail isradd y lluoswm \sqrt{3^{2}\times 2} fel lluoswm ail israddau \sqrt{3^{2}}\sqrt{2}. Cymryd isradd 3^{2}.
9\sqrt{2}
Cyfuno 6\sqrt{2} a 3\sqrt{2} i gael 9\sqrt{2}.
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