Enrhifo
\sqrt{7}+2\sqrt{10}\approx 8.970306631
Rhannu
Copïo i clipfwrdd
2\sqrt{2}\sqrt{5}+\sqrt{7}
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{10}+\sqrt{7}
I luosi \sqrt{2} a \sqrt{5}, dylid lluosi'r rhifau dan yr ail isradd.
Enghreifftiau
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\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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Terfynau
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