Enrhifo
10\sqrt{7}+2\approx 28.457513111
Rhannu
Copïo i clipfwrdd
\frac{\sqrt{1}}{\sqrt{7}}\sqrt{28}+\sqrt{700}
Ailysgrifennu ail isradd y rhaniad \sqrt{\frac{1}{7}} fel rhaniad ail israddau \frac{\sqrt{1}}{\sqrt{7}}.
\frac{1}{\sqrt{7}}\sqrt{28}+\sqrt{700}
Cyfrifo ail isradd 1 a chael 1.
\frac{\sqrt{7}}{\left(\sqrt{7}\right)^{2}}\sqrt{28}+\sqrt{700}
Mae'n rhesymoli enwadur \frac{1}{\sqrt{7}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{7}.
\frac{\sqrt{7}}{7}\sqrt{28}+\sqrt{700}
Sgwâr \sqrt{7} yw 7.
\frac{\sqrt{7}}{7}\times 2\sqrt{7}+\sqrt{700}
Ffactora 28=2^{2}\times 7. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 7} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{7}. Cymryd isradd 2^{2}.
\frac{\sqrt{7}\times 2}{7}\sqrt{7}+\sqrt{700}
Mynegwch \frac{\sqrt{7}}{7}\times 2 fel ffracsiwn unigol.
\frac{\sqrt{7}\times 2\sqrt{7}}{7}+\sqrt{700}
Mynegwch \frac{\sqrt{7}\times 2}{7}\sqrt{7} fel ffracsiwn unigol.
\frac{\sqrt{7}\times 2\sqrt{7}}{7}+10\sqrt{7}
Ffactora 700=10^{2}\times 7. Ailysgrifennu ail isradd y lluoswm \sqrt{10^{2}\times 7} fel lluoswm ail israddau \sqrt{10^{2}}\sqrt{7}. Cymryd isradd 10^{2}.
\frac{\sqrt{7}\times 2\sqrt{7}}{7}+\frac{7\times 10\sqrt{7}}{7}
I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluoswch 10\sqrt{7} â \frac{7}{7}.
\frac{\sqrt{7}\times 2\sqrt{7}+7\times 10\sqrt{7}}{7}
Gan fod gan \frac{\sqrt{7}\times 2\sqrt{7}}{7} a \frac{7\times 10\sqrt{7}}{7} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.
\frac{14+70\sqrt{7}}{7}
Gwnewch y gwaith lluosi yn \sqrt{7}\times 2\sqrt{7}+7\times 10\sqrt{7}.
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}