Enrhifo
7m^{2}-4n-6
Ehangu
7m^{2}-4n-6
Rhannu
Copïo i clipfwrdd
7m^{2}-8-\left(m^{2}+3n-5+n-\left(-3+m^{2}\right)\right)
I ddod o hyd i wrthwyneb 5-n, dewch o hyd i wrthwyneb pob term.
7m^{2}-8-\left(m^{2}+4n-5-\left(-3+m^{2}\right)\right)
Cyfuno 3n a n i gael 4n.
7m^{2}-8-\left(m^{2}+4n-5+3-m^{2}\right)
I ddod o hyd i wrthwyneb -3+m^{2}, dewch o hyd i wrthwyneb pob term.
7m^{2}-8-\left(m^{2}+4n-2-m^{2}\right)
Adio -5 a 3 i gael -2.
7m^{2}-8-\left(4n-2\right)
Cyfuno m^{2} a -m^{2} i gael 0.
7m^{2}-8-4n+2
I ddod o hyd i wrthwyneb 4n-2, dewch o hyd i wrthwyneb pob term.
7m^{2}-6-4n
Adio -8 a 2 i gael -6.
7m^{2}-8-\left(m^{2}+3n-5+n-\left(-3+m^{2}\right)\right)
I ddod o hyd i wrthwyneb 5-n, dewch o hyd i wrthwyneb pob term.
7m^{2}-8-\left(m^{2}+4n-5-\left(-3+m^{2}\right)\right)
Cyfuno 3n a n i gael 4n.
7m^{2}-8-\left(m^{2}+4n-5+3-m^{2}\right)
I ddod o hyd i wrthwyneb -3+m^{2}, dewch o hyd i wrthwyneb pob term.
7m^{2}-8-\left(m^{2}+4n-2-m^{2}\right)
Adio -5 a 3 i gael -2.
7m^{2}-8-\left(4n-2\right)
Cyfuno m^{2} a -m^{2} i gael 0.
7m^{2}-8-4n+2
I ddod o hyd i wrthwyneb 4n-2, dewch o hyd i wrthwyneb pob term.
7m^{2}-6-4n
Adio -8 a 2 i gael -6.
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}