Enrhifo
\frac{\sqrt{230}}{14}+\frac{145}{98}\approx 2.562859757
Rhannu
Copïo i clipfwrdd
\frac{-145-\sqrt{21025-4-49\times 199}}{-98}
Cyfrifo 145 i bŵer 2 a chael 21025.
\frac{-145-\sqrt{21021-49\times 199}}{-98}
Tynnu 4 o 21025 i gael 21021.
\frac{-145-\sqrt{21021-9751}}{-98}
Lluosi 49 a 199 i gael 9751.
\frac{-145-\sqrt{11270}}{-98}
Tynnu 9751 o 21021 i gael 11270.
\frac{-145-7\sqrt{230}}{-98}
Ffactora 11270=7^{2}\times 230. Ailysgrifennu ail isradd y lluoswm \sqrt{7^{2}\times 230} fel lluoswm ail israddau \sqrt{7^{2}}\sqrt{230}. Cymryd isradd 7^{2}.
\frac{145+7\sqrt{230}}{98}
Lluosi'r rhifiadur a’r enwadur â -1.
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}