Enrhifo
5\left(\sqrt{2}+\sqrt{6}\right)\approx 19.318516526
Rhannu
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\frac{20\left(\sqrt{6}+\sqrt{2}\right)}{\left(\sqrt{6}-\sqrt{2}\right)\left(\sqrt{6}+\sqrt{2}\right)}
Mae'n rhesymoli enwadur \frac{20}{\sqrt{6}-\sqrt{2}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{6}+\sqrt{2}.
\frac{20\left(\sqrt{6}+\sqrt{2}\right)}{\left(\sqrt{6}\right)^{2}-\left(\sqrt{2}\right)^{2}}
Ystyriwch \left(\sqrt{6}-\sqrt{2}\right)\left(\sqrt{6}+\sqrt{2}\right). Gellir trawsnewid lluosi yn wahaniaeth rhwng sgwariau drwy ddefnyddio’r rheol: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
\frac{20\left(\sqrt{6}+\sqrt{2}\right)}{6-2}
Sgwâr \sqrt{6}. Sgwâr \sqrt{2}.
\frac{20\left(\sqrt{6}+\sqrt{2}\right)}{4}
Tynnu 2 o 6 i gael 4.
5\left(\sqrt{6}+\sqrt{2}\right)
Rhannu 20\left(\sqrt{6}+\sqrt{2}\right) â 4 i gael 5\left(\sqrt{6}+\sqrt{2}\right).
5\sqrt{6}+5\sqrt{2}
Defnyddio’r briodwedd ddosbarthu i luosi 5 â \sqrt{6}+\sqrt{2}.
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