Enrhifo
\frac{39}{5}=7.8
Ffactor
\frac{3 \cdot 13}{5} = 7\frac{4}{5} = 7.8
Rhannu
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\frac{\frac{5}{4}-\left(-\frac{5}{4}\right)^{2}}{\left(\frac{5}{4}\right)^{2}}-\left(-2\right)^{3}
Adio -2 a \frac{3}{4} i gael -\frac{5}{4}.
\frac{\frac{5}{4}-\frac{25}{16}}{\left(\frac{5}{4}\right)^{2}}-\left(-2\right)^{3}
Cyfrifo -\frac{5}{4} i bŵer 2 a chael \frac{25}{16}.
\frac{-\frac{5}{16}}{\left(\frac{5}{4}\right)^{2}}-\left(-2\right)^{3}
Tynnu \frac{25}{16} o \frac{5}{4} i gael -\frac{5}{16}.
\frac{-\frac{5}{16}}{\frac{25}{16}}-\left(-2\right)^{3}
Cyfrifo \frac{5}{4} i bŵer 2 a chael \frac{25}{16}.
-\frac{5}{16}\times \frac{16}{25}-\left(-2\right)^{3}
Rhannwch -\frac{5}{16} â \frac{25}{16} drwy luosi -\frac{5}{16} â chilydd \frac{25}{16}.
-\frac{1}{5}-\left(-2\right)^{3}
Lluosi -\frac{5}{16} a \frac{16}{25} i gael -\frac{1}{5}.
-\frac{1}{5}-\left(-8\right)
Cyfrifo -2 i bŵer 3 a chael -8.
-\frac{1}{5}+8
Gwrthwyneb -8 yw 8.
\frac{39}{5}
Adio -\frac{1}{5} a 8 i gael \frac{39}{5}.
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}