Enrhifo
0
Ffactor
0
Rhannu
Copïo i clipfwrdd
2\times 2\sqrt{5}+\frac{2}{3}\sqrt{45}-\frac{5}{4}\sqrt{80}-\sqrt{5}
Ffactora 20=2^{2}\times 5. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 5} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{5}. Cymryd isradd 2^{2}.
4\sqrt{5}+\frac{2}{3}\sqrt{45}-\frac{5}{4}\sqrt{80}-\sqrt{5}
Lluosi 2 a 2 i gael 4.
4\sqrt{5}+\frac{2}{3}\times 3\sqrt{5}-\frac{5}{4}\sqrt{80}-\sqrt{5}
Ffactora 45=3^{2}\times 5. Ailysgrifennu ail isradd y lluoswm \sqrt{3^{2}\times 5} fel lluoswm ail israddau \sqrt{3^{2}}\sqrt{5}. Cymryd isradd 3^{2}.
4\sqrt{5}+2\sqrt{5}-\frac{5}{4}\sqrt{80}-\sqrt{5}
Canslo 3 a 3.
6\sqrt{5}-\frac{5}{4}\sqrt{80}-\sqrt{5}
Cyfuno 4\sqrt{5} a 2\sqrt{5} i gael 6\sqrt{5}.
6\sqrt{5}-\frac{5}{4}\times 4\sqrt{5}-\sqrt{5}
Ffactora 80=4^{2}\times 5. Ailysgrifennu ail isradd y lluoswm \sqrt{4^{2}\times 5} fel lluoswm ail israddau \sqrt{4^{2}}\sqrt{5}. Cymryd isradd 4^{2}.
6\sqrt{5}-5\sqrt{5}-\sqrt{5}
Canslo 4 a 4.
\sqrt{5}-\sqrt{5}
Cyfuno 6\sqrt{5} a -5\sqrt{5} i gael \sqrt{5}.
0
Cyfuno \sqrt{5} a -\sqrt{5} i gael 0.
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