Réitigh left(2-mright)x^2-left(3m+1right)x+4=0

$$\left( 2-m \right) { x }^{ 2 } - \left( 3m+1 \right) x+4 = 0$$

Réitigh do m.

$$m=\frac{2x^{2}-x+4}{x\left(x+3\right)}$$

$$x\neq -3\text{ and }x\neq 0$$

Céimeanna chun Cothromóidí Líneacha a Réiteach

Úsáid an t-airí dáileach chun 2-m a mhéadú faoi x^{2}.

$$2x^{2}-mx^{2}-\left(3m+1\right)x+4=0$$

Úsáid an t-airí dáileach chun 3m+1 a mhéadú faoi x.

$$2x^{2}-mx^{2}-\left(3mx+x\right)+4=0$$

Chun an mhalairt ar 3mx+x a aimsiú, aimsigh an mhalairt ar gach téarma.

$$2x^{2}-mx^{2}-3mx-x+4=0$$

Bain 2x^{2} ón dá thaobh. Is ionann rud ar bith a dhealaítear ó nialas agus a shéanadh.

$$-mx^{2}-3mx-x+4=-2x^{2}$$

Cuir x leis an dá thaobh.

$$-mx^{2}-3mx+4=-2x^{2}+x$$

Bain 4 ón dá thaobh.

$$-mx^{2}-3mx=-2x^{2}+x-4$$

Comhcheangail na téarmaí ar fad ina bhfuil m.

$$\left(-x^{2}-3x\right)m=-2x^{2}+x-4$$

Roinn an dá thaobh faoi -x^{2}-3x.

$$\frac{\left(-x^{2}-3x\right)m}{-x^{2}-3x}=\frac{-2x^{2}+x-4}{-x^{2}-3x}$$

Má roinntear é faoi -x^{2}-3x cuirtear an iolrúchán faoi -x^{2}-3x ar ceal.

$$m=\frac{-2x^{2}+x-4}{-x^{2}-3x}$$

Roinn -2x^{2}+x-4 faoi -x^{2}-3x.

$$m=\frac{-2x^{2}+x-4}{-x\left(x+3\right)}$$

Réitigh do x. (complex solution)

$$\left\{\begin{matrix}x=\frac{\sqrt{\left(m-1\right)\left(9m+31\right)}+3m+1}{2\left(2-m\right)}\text{; }x=\frac{-\sqrt{\left(m-1\right)\left(9m+31\right)}+3m+1}{2\left(2-m\right)}\text{, }&m\neq 2\\x=\frac{4}{7}\text{, }&m=2\end{matrix}\right.$$

Réitigh do x.

$$\left\{\begin{matrix}x=\frac{\sqrt{\left(m-1\right)\left(9m+31\right)}+3m+1}{2\left(2-m\right)}\text{; }x=\frac{-\sqrt{\left(m-1\right)\left(9m+31\right)}+3m+1}{2\left(2-m\right)}\text{, }&\left(m\neq 2\text{ and }m\geq 1\right)\text{ or }m\leq -\frac{31}{9}\\x=\frac{4}{7}\text{, }&m=2\end{matrix}\right.$$