Enrhifo
8\sqrt{2}\approx 11.313708499
Rhannu
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3\times 3\sqrt{2}-11\sqrt{2}+2\sqrt{50}
Ffactora 18=3^{2}\times 2. Ailysgrifennu ail isradd y lluoswm \sqrt{3^{2}\times 2} fel lluoswm ail israddau \sqrt{3^{2}}\sqrt{2}. Cymryd isradd 3^{2}.
9\sqrt{2}-11\sqrt{2}+2\sqrt{50}
Lluosi 3 a 3 i gael 9.
-2\sqrt{2}+2\sqrt{50}
Cyfuno 9\sqrt{2} a -11\sqrt{2} i gael -2\sqrt{2}.
-2\sqrt{2}+2\times 5\sqrt{2}
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}.
-2\sqrt{2}+10\sqrt{2}
Lluosi 2 a 5 i gael 10.
8\sqrt{2}
Cyfuno -2\sqrt{2} a 10\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
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y = 3x + 4
Rhifyddeg
699 * 533
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\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 ) }
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Terfynau
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}