Enrhifo
-\frac{2}{7}\approx -0.285714286
Ffactor
-\frac{2}{7} = -0.2857142857142857
Cwis
Arithmetic
\frac { - 3 | 1 - 5 | + 2 ( 3 - 5 ) ^ { 2 } } { ( 4 - 8 ) ^ { 2 } + 2 ( - 1 ) ^ { 15 } }
Rhannu
Copïo i clipfwrdd
\frac{-3|-4|+2\left(3-5\right)^{2}}{\left(4-8\right)^{2}+2\left(-1\right)^{15}}
Tynnu 5 o 1 i gael -4.
\frac{-3\times 4+2\left(3-5\right)^{2}}{\left(4-8\right)^{2}+2\left(-1\right)^{15}}
Gwerth absoliwt rhif real a yw a pan a\geq 0, neu -a pan a<0. Gwerth absoliwt -4 yw 4.
\frac{-12+2\left(3-5\right)^{2}}{\left(4-8\right)^{2}+2\left(-1\right)^{15}}
Lluosi -3 a 4 i gael -12.
\frac{-12+2\left(-2\right)^{2}}{\left(4-8\right)^{2}+2\left(-1\right)^{15}}
Tynnu 5 o 3 i gael -2.
\frac{-12+2\times 4}{\left(4-8\right)^{2}+2\left(-1\right)^{15}}
Cyfrifo -2 i bŵer 2 a chael 4.
\frac{-12+8}{\left(4-8\right)^{2}+2\left(-1\right)^{15}}
Lluosi 2 a 4 i gael 8.
\frac{-4}{\left(4-8\right)^{2}+2\left(-1\right)^{15}}
Adio -12 a 8 i gael -4.
\frac{-4}{\left(-4\right)^{2}+2\left(-1\right)^{15}}
Tynnu 8 o 4 i gael -4.
\frac{-4}{16+2\left(-1\right)^{15}}
Cyfrifo -4 i bŵer 2 a chael 16.
\frac{-4}{16+2\left(-1\right)}
Cyfrifo -1 i bŵer 15 a chael -1.
\frac{-4}{16-2}
Lluosi 2 a -1 i gael -2.
\frac{-4}{14}
Tynnu 2 o 16 i gael 14.
-\frac{2}{7}
Lleihau'r ffracsiwn \frac{-4}{14} i'r graddau lleiaf posib drwy dynnu a chanslo allan 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}