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\sqrt{18}=\sqrt{18}\text{ and }\sqrt{18}=3\sqrt{2}
Adio 9 a 9 i gael 18.
3\sqrt{2}=\sqrt{18}\text{ and }\sqrt{18}=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}.
3\sqrt{2}=3\sqrt{2}\text{ and }\sqrt{18}=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}.
3\sqrt{2}=3\sqrt{2}\text{ and }3\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}.
3\sqrt{2}-3\sqrt{2}=0\text{ and }3\sqrt{2}=3\sqrt{2}
Tynnu 3\sqrt{2} o'r ddwy ochr.
0=0\text{ and }3\sqrt{2}=3\sqrt{2}
Cyfuno 3\sqrt{2} a -3\sqrt{2} i gael 0.
\text{true}\text{ and }3\sqrt{2}=3\sqrt{2}
Cymharu 0 gyda 0.
\text{true}\text{ and }3\sqrt{2}-3\sqrt{2}=0
Tynnu 3\sqrt{2} o'r ddwy ochr.
\text{true}\text{ and }0=0
Cyfuno 3\sqrt{2} a -3\sqrt{2} i gael 0.
\text{true}\text{ and }\text{true}
Cymharu 0 gyda 0.
\text{true}
Cysylltydd \text{true} a \text{true} yw \text{true}.
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