Datrys 27*sqrt{3}(-5sqrt{10}+sqrt{6})

$$27 \cdot \sqrt { 3 } ( - 5 \sqrt { 10 } + \sqrt { 6 } )$$

Enrhifo

$$81\sqrt{2}-135\sqrt{30}\approx -624.87415408$$

Camau Ateb

Defnyddio’r briodwedd ddosbarthu i luosi 27\sqrt{3} â -5\sqrt{10}+\sqrt{6}.

$$-135\sqrt{3}\sqrt{10}+27\sqrt{3}\sqrt{6}$$

I luosi \sqrt{3} a \sqrt{10}, dylid lluosi'r rhifau dan yr ail isradd.

$$-135\sqrt{30}+27\sqrt{3}\sqrt{6}$$

Ffactora 6=3\times 2. Ailysgrifennu ail isradd y lluoswm \sqrt{3\times 2} fel lluoswm ail israddau \sqrt{3}\sqrt{2}.

$$-135\sqrt{30}+27\sqrt{3}\sqrt{3}\sqrt{2}$$

Lluosi \sqrt{3} a \sqrt{3} i gael 3.

$$-135\sqrt{30}+27\times 3\sqrt{2}$$

Lluosi 27 a 3 i gael 81.

$$-135\sqrt{30}+81\sqrt{2}$$