Enrhifo
2\sqrt{17}\approx 8.246211251
Rhannu
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\sqrt{75-12+\frac{25}{5}}
Lluosi 5 a 15 i gael 75.
\sqrt{63+\frac{25}{5}}
Tynnu 12 o 75 i gael 63.
\sqrt{63+5}
Rhannu 25 â 5 i gael 5.
\sqrt{68}
Adio 63 a 5 i gael 68.
2\sqrt{17}
Ffactora 68=2^{2}\times 17. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 17} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{17}. Cymryd isradd 2^{2}.
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}