Datrys 450mm^2=(1/2)18mm(a+24mm)

$$450 mm ^ { 2 } = ( \frac { 1 } { 2 } ) 18 mm ( a + 24 mm )$$

Datrys ar gyfer a

$$\left\{\begin{matrix}\\a=-2m\left(12m-25\right)\text{, }&\text{unconditionally}\\a\in \mathrm{R}\text{, }&m=0\end{matrix}\right.$$

Camau ar gyfer Datrys Hafaliad Llinol

Er mwyn lluosi pwerau sy’n rhannu’r un sail, adiwch eu esbonyddion. Adiwch 1 a 2 i gael 3.

$$450m^{3}=\frac{1}{2}\times 18mm\left(a+24mm\right)$$

Lluosi m a m i gael m^{2}.

$$450m^{3}=\frac{1}{2}\times 18mm\left(a+24m^{2}\right)$$

Lluosi m a m i gael m^{2}.

$$450m^{3}=\frac{1}{2}\times 18m^{2}\left(a+24m^{2}\right)$$

Lluosi \frac{1}{2} a 18 i gael 9.

$$450m^{3}=9m^{2}\left(a+24m^{2}\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi 9m^{2} â a+24m^{2}.

$$450m^{3}=9m^{2}a+216m^{4}$$

Cyfnewidiwch yr ochrau fel bod yr holl dermau newidiol ar yr ochr chwith.

$$9m^{2}a+216m^{4}=450m^{3}$$

Tynnu 216m^{4} o'r ddwy ochr.

$$9m^{2}a=450m^{3}-216m^{4}$$

Rhannu’r ddwy ochr â 9m^{2}.

$$\frac{9m^{2}a}{9m^{2}}=\frac{18\left(25-12m\right)m^{3}}{9m^{2}}$$

Mae rhannu â 9m^{2} yn dad-wneud lluosi â 9m^{2}.

$$a=\frac{18\left(25-12m\right)m^{3}}{9m^{2}}$$

Rhannwch 18\left(25-12m\right)m^{3} â 9m^{2}.

$$a=2m\left(25-12m\right)$$

Datrys ar gyfer m

$$\left\{\begin{matrix}\\m=0\text{, }&\text{unconditionally}\\m=\frac{-\sqrt{625-24a}+25}{24}\text{; }m=\frac{\sqrt{625-24a}+25}{24}\text{, }&a\leq \frac{625}{24}\end{matrix}\right.$$