Datrys 15sqrt{30*20}*sqrt{60}

$$15 \sqrt { 30 \cdot 20 } \cdot \sqrt { 60 }$$

Enrhifo

$$900\sqrt{10}\approx 2846.049894152$$

Camau Ateb

Lluosi 30 a 20 i gael 600.

$$15\sqrt{600}\sqrt{60}$$

Ffactora 600=10^{2}\times 6. Ailysgrifennu ail isradd y lluoswm \sqrt{10^{2}\times 6} fel lluoswm ail israddau \sqrt{10^{2}}\sqrt{6}. Cymryd isradd 10^{2}.

$$15\times 10\sqrt{6}\sqrt{60}$$

Lluosi 15 a 10 i gael 150.

$$150\sqrt{6}\sqrt{60}$$

Ffactora 60=2^{2}\times 15. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 15} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{15}. Cymryd isradd 2^{2}.

$$150\sqrt{6}\times 2\sqrt{15}$$

Lluosi 150 a 2 i gael 300.

$$300\sqrt{6}\sqrt{15}$$

I luosi \sqrt{6} a \sqrt{15}, dylid lluosi'r rhifau dan yr ail isradd.

$$300\sqrt{90}$$

Ffactora 90=3^{2}\times 10. Ailysgrifennu ail isradd y lluoswm \sqrt{3^{2}\times 10} fel lluoswm ail israddau \sqrt{3^{2}}\sqrt{10}. Cymryd isradd 3^{2}.

$$300\times 3\sqrt{10}$$

Lluosi 300 a 3 i gael 900.

$$900\sqrt{10}$$