Datrys 60(1-t)^2=48.6

$$60 ( 1 - t ) ^ { 2 } = 48.6$$

Datrys ar gyfer t

$$t=0.1$$

$$t=1.9$$

Camau drwy Ganfod Isradd

Rhannu’r ddwy ochr â 60.

$$\frac{60\left(-t+1\right)^{2}}{60}=\frac{48.6}{60}$$

Mae rhannu â 60 yn dad-wneud lluosi â 60.

$$\left(-t+1\right)^{2}=\frac{48.6}{60}$$

Rhannwch 48.6 â 60.

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

Cymryd isradd dwy ochr yr hafaliad.

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

Tynnu 1 o ddwy ochr yr hafaliad.

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

Mae tynnu 1 o’i hun yn gadael 0.

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

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

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

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

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

Rhannu’r ddwy ochr â -1.

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

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

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

Rhannwch -\frac{1}{10} â -1.

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

Rhannwch -\frac{19}{10} â -1.

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

Mae’r hafaliad wedi’i ddatrys nawr.

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