Enrhifo
-2\sqrt{2}-3\approx -5.828427125
Rhannu
Copïo i clipfwrdd
-3+3\sqrt{2}-\sqrt{50}
Tynnu 4 o 1 i gael -3.
-3+3\sqrt{2}-5\sqrt{2}
Ffactora 50=5^{2}\times 2. Ailysgrifennu ail isradd y lluoswm \sqrt{5^{2}\times 2} fel lluoswm ail israddau \sqrt{5^{2}}\sqrt{2}. Cymryd isradd 5^{2}.
-3-2\sqrt{2}
Cyfuno 3\sqrt{2} a -5\sqrt{2} i gael -2\sqrt{2}.
Enghreifftiau
Hafaliad cwadratig
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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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\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
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