Enrhifo
-\frac{8\sqrt{5}}{5}\approx -3.577708764
Rhannu
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\frac{1-9}{\sqrt{2\times 1+3}}
Cyfrifo 1 i bŵer 2 a chael 1.
\frac{-8}{\sqrt{2\times 1+3}}
Tynnu 9 o 1 i gael -8.
\frac{-8}{\sqrt{2+3}}
Lluosi 2 a 1 i gael 2.
\frac{-8}{\sqrt{5}}
Adio 2 a 3 i gael 5.
\frac{-8\sqrt{5}}{\left(\sqrt{5}\right)^{2}}
Mae'n rhesymoli enwadur \frac{-8}{\sqrt{5}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{5}.
\frac{-8\sqrt{5}}{5}
Sgwâr \sqrt{5} yw 5.
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}