Enrhifo
6\sqrt{10}\approx 18.973665961
Rhannu
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10\sqrt{10}-2\sqrt{40}
Ffactora 1000=10^{2}\times 10. Ailysgrifennu ail isradd y lluoswm \sqrt{10^{2}\times 10} fel lluoswm ail israddau \sqrt{10^{2}}\sqrt{10}. Cymryd isradd 10^{2}.
10\sqrt{10}-2\times 2\sqrt{10}
Ffactora 40=2^{2}\times 10. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 10} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{10}. Cymryd isradd 2^{2}.
10\sqrt{10}-4\sqrt{10}
Lluosi -2 a 2 i gael -4.
6\sqrt{10}
Cyfuno 10\sqrt{10} a -4\sqrt{10} i gael 6\sqrt{10}.
Enghreifftiau
Hafaliad cwadratig
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometreg
4 \sin \theta \cos \theta = 2 \sin \theta
Hafaliad llinol
y = 3x + 4
Rhifyddeg
699 * 533
Matrics
\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]
Hafaliad ar y pryd
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Gwahaniaethu
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integreiddiad
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Terfynau
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}