Enrhifo (complex solution)
-8+3\sqrt{5}i\approx -8+6.708203932i
Rhan Real (complex solution)
-8
Enrhifo
\text{Indeterminate}
Rhannu
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-1+\sqrt{-80}-\sqrt{49}-\sqrt{-5}
Cyfrifo ail isradd 1 a chael 1.
-1+4i\sqrt{5}-\sqrt{49}-\sqrt{-5}
Ffactora -80=\left(4i\right)^{2}\times 5. Ailysgrifennu ail isradd y lluoswm \sqrt{\left(4i\right)^{2}\times 5} fel lluoswm ail israddau \sqrt{\left(4i\right)^{2}}\sqrt{5}. Cymryd isradd \left(4i\right)^{2}.
-1+4i\sqrt{5}-7-\sqrt{-5}
Cyfrifo ail isradd 49 a chael 7.
-8+4i\sqrt{5}-\sqrt{-5}
Tynnu 7 o -1 i gael -8.
-8+4i\sqrt{5}-\sqrt{5}i
Ffactora -5=5\left(-1\right). Ailysgrifennu ail isradd y lluoswm \sqrt{5\left(-1\right)} fel lluoswm ail israddau \sqrt{5}\sqrt{-1}. Drwy ddiffiniad, ail isradd -1 yw i.
-8+4i\sqrt{5}-i\sqrt{5}
Lluosi -1 a i i gael -i.
-8+3i\sqrt{5}
Cyfuno 4i\sqrt{5} a -i\sqrt{5} i gael 3i\sqrt{5}.
Enghreifftiau
Hafaliad cwadratig
{ x } ^ { 2 } - 4 x - 5 = 0
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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}