Enrhifo
40n^{2}-\frac{8}{5}
Ehangu
40n^{2}-\frac{8}{5}
Rhannu
Copïo i clipfwrdd
\left(10n+2\right)\left(4n-\frac{4}{5}\right)
Defnyddio’r briodwedd ddosbarthu i luosi 2 â 5n+1.
40n^{2}+10n\left(-\frac{4}{5}\right)+8n+2\left(-\frac{4}{5}\right)
Cyfrifwch y briodoledd ddosrannol drwy luosi pob 10n+2 gan bob 4n-\frac{4}{5}.
40n^{2}+\frac{10\left(-4\right)}{5}n+8n+2\left(-\frac{4}{5}\right)
Mynegwch 10\left(-\frac{4}{5}\right) fel ffracsiwn unigol.
40n^{2}+\frac{-40}{5}n+8n+2\left(-\frac{4}{5}\right)
Lluosi 10 a -4 i gael -40.
40n^{2}-8n+8n+2\left(-\frac{4}{5}\right)
Rhannu -40 â 5 i gael -8.
40n^{2}+2\left(-\frac{4}{5}\right)
Cyfuno -8n a 8n i gael 0.
40n^{2}+\frac{2\left(-4\right)}{5}
Mynegwch 2\left(-\frac{4}{5}\right) fel ffracsiwn unigol.
40n^{2}+\frac{-8}{5}
Lluosi 2 a -4 i gael -8.
40n^{2}-\frac{8}{5}
Gellir ailysgrifennu \frac{-8}{5} fel -\frac{8}{5} drwy echdynnu’r arwydd negatif.
\left(10n+2\right)\left(4n-\frac{4}{5}\right)
Defnyddio’r briodwedd ddosbarthu i luosi 2 â 5n+1.
40n^{2}+10n\left(-\frac{4}{5}\right)+8n+2\left(-\frac{4}{5}\right)
Cyfrifwch y briodoledd ddosrannol drwy luosi pob 10n+2 gan bob 4n-\frac{4}{5}.
40n^{2}+\frac{10\left(-4\right)}{5}n+8n+2\left(-\frac{4}{5}\right)
Mynegwch 10\left(-\frac{4}{5}\right) fel ffracsiwn unigol.
40n^{2}+\frac{-40}{5}n+8n+2\left(-\frac{4}{5}\right)
Lluosi 10 a -4 i gael -40.
40n^{2}-8n+8n+2\left(-\frac{4}{5}\right)
Rhannu -40 â 5 i gael -8.
40n^{2}+2\left(-\frac{4}{5}\right)
Cyfuno -8n a 8n i gael 0.
40n^{2}+\frac{2\left(-4\right)}{5}
Mynegwch 2\left(-\frac{4}{5}\right) fel ffracsiwn unigol.
40n^{2}+\frac{-8}{5}
Lluosi 2 a -4 i gael -8.
40n^{2}-\frac{8}{5}
Gellir ailysgrifennu \frac{-8}{5} fel -\frac{8}{5} drwy echdynnu’r arwydd negatif.
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}