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Problemau tebyg o chwiliad gwe

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2\sqrt{2}-\sqrt{18}-\sqrt{18}
Ffactora 8=2^{2}\times 2. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 2} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{2}. Cymryd isradd 2^{2}.
2\sqrt{2}-3\sqrt{2}-\sqrt{18}
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}.
2\sqrt{2}-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}.
2\sqrt{2}+2\left(-3\sqrt{2}\right)
Cyfuno -3\sqrt{2} a -3\sqrt{2} i gael 2\left(-3\sqrt{2}\right).
2\sqrt{2}-2\times 3\sqrt{2}
Lluosi 2 a -1 i gael -2.
2\sqrt{2}-6\sqrt{2}
Lluosi -2 a 3 i gael -6.
-4\sqrt{2}
Cyfuno 2\sqrt{2} a -6\sqrt{2} i gael -4\sqrt{2}.