Datrys 50left(1-xright)^2=40.5

$$50 { \left(1-x \right) }^{ 2 } = 40.5$$

Datrys ar gyfer x

$$x=0.1$$

$$x=1.9$$

Camau drwy Ganfod Isradd

Rhannu’r ddwy ochr â 50.

$$\frac{50\left(-x+1\right)^{2}}{50}=\frac{40.5}{50}$$

Mae rhannu â 50 yn dad-wneud lluosi â 50.

$$\left(-x+1\right)^{2}=\frac{40.5}{50}$$

Rhannwch 40.5 â 50.

$$\left(-x+1\right)^{2}=0.81$$

Cymryd isradd dwy ochr yr hafaliad.

$$-x+1=\frac{9}{10} -x+1=-\frac{9}{10}$$

Tynnu 1 o ddwy ochr yr hafaliad.

$$-x+1-1=\frac{9}{10}-1 -x+1-1=-\frac{9}{10}-1$$

Mae tynnu 1 o’i hun yn gadael 0.

$$-x=\frac{9}{10}-1 -x=-\frac{9}{10}-1$$

Tynnu 1 o \frac{9}{10}.

$$-x=-\frac{1}{10}$$

Tynnu 1 o -\frac{9}{10}.

$$-x=-\frac{19}{10}$$

Rhannu’r ddwy ochr â -1.

$$\frac{-x}{-1}=-\frac{\frac{1}{10}}{-1} \frac{-x}{-1}=-\frac{\frac{19}{10}}{-1}$$

Mae rhannu â -1 yn dad-wneud lluosi â -1.

$$x=-\frac{\frac{1}{10}}{-1} x=-\frac{\frac{19}{10}}{-1}$$

Rhannwch -\frac{1}{10} â -1.

$$x=\frac{1}{10}$$

Rhannwch -\frac{19}{10} â -1.

$$x=\frac{19}{10}$$

Mae’r hafaliad wedi’i ddatrys nawr.

$$x=\frac{1}{10} x=\frac{19}{10}$$