(1+3 \sqrt{ 2 } -(4- \sqrt{ 50 } )
Enrhifo
8\sqrt{2}-3\approx 8.313708499
Rhannu
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1+3\sqrt{2}-\left(4-5\sqrt{2}\right)
Ffactora 50=5^{2}\times 2. Ailysgrifennu ail isradd y lluoswm \sqrt{5^{2}\times 2} fel lluoswm ail israddau \sqrt{5^{2}}\sqrt{2}. Cymryd isradd 5^{2}.
1+3\sqrt{2}-4-\left(-5\sqrt{2}\right)
I ddod o hyd i wrthwyneb 4-5\sqrt{2}, dewch o hyd i wrthwyneb pob term.
-3+3\sqrt{2}-\left(-5\sqrt{2}\right)
Tynnu 4 o 1 i gael -3.
-3+3\sqrt{2}+5\sqrt{2}
Gwrthwyneb -5\sqrt{2} yw 5\sqrt{2}.
-3+8\sqrt{2}
Cyfuno 3\sqrt{2} a 5\sqrt{2} i gael 8\sqrt{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}