Enrhifo
4\sqrt{65}-\sqrt{3}-4\sqrt{5}\approx 21.572708276
Cwis
Arithmetic
5 problemau tebyg i:
( \sqrt { 12 } - 4 \sqrt { 5 } ) - ( 3 \sqrt { 3 } - 4 \sqrt { 65 } )
Rhannu
Copïo i clipfwrdd
2\sqrt{3}-4\sqrt{5}-\left(3\sqrt{3}-4\sqrt{65}\right)
Ffactora 12=2^{2}\times 3. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 3} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{3}. Cymryd isradd 2^{2}.
2\sqrt{3}-4\sqrt{5}-3\sqrt{3}-\left(-4\sqrt{65}\right)
I ddod o hyd i wrthwyneb 3\sqrt{3}-4\sqrt{65}, dewch o hyd i wrthwyneb pob term.
-\sqrt{3}-4\sqrt{5}-\left(-4\sqrt{65}\right)
Cyfuno 2\sqrt{3} a -3\sqrt{3} i gael -\sqrt{3}.
-\sqrt{3}-4\sqrt{5}+4\sqrt{65}
Gwrthwyneb -4\sqrt{65} yw 4\sqrt{65}.
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}