Enrhifo
\frac{\sqrt{21}}{4}\approx 1.145643924
Rhannu
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\frac{3\sqrt{7}\sqrt{3}}{4\left(\sqrt{3}\right)^{2}}
Mae'n rhesymoli enwadur \frac{3\sqrt{7}}{4\sqrt{3}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{3}.
\frac{3\sqrt{7}\sqrt{3}}{4\times 3}
Sgwâr \sqrt{3} yw 3.
\frac{3\sqrt{21}}{4\times 3}
I luosi \sqrt{7} a \sqrt{3}, dylid lluosi'r rhifau dan yr ail isradd.
\frac{3\sqrt{21}}{12}
Lluosi 4 a 3 i gael 12.
\frac{1}{4}\sqrt{21}
Rhannu 3\sqrt{21} â 12 i gael \frac{1}{4}\sqrt{21}.
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