Datrys 50left(1-xright)^2=405

$$50 { \left(1-x \right) }^{ 2 } = 405$$

Datrys ar gyfer x

$$x=-\frac{9\sqrt{10}}{10}+1\approx -1.846049894$$

$$x=\frac{9\sqrt{10}}{10}+1\approx 3.846049894$$

Camau drwy Ganfod Isradd

Rhannu’r ddwy ochr â 50.

$$\frac{50\left(-x+1\right)^{2}}{50}=\frac{405}{50}$$

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

$$\left(-x+1\right)^{2}=\frac{405}{50}$$

Lleihau'r ffracsiwn \frac{405}{50} i'r graddau lleiaf posib drwy dynnu a chanslo allan 5.

$$\left(-x+1\right)^{2}=\frac{81}{10}$$

Cymryd isradd dwy ochr yr hafaliad.

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

Tynnu 1 o ddwy ochr yr hafaliad.

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

Mae tynnu 1 o’i hun yn gadael 0.

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

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

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

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

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

Rhannu’r ddwy ochr â -1.

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

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

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

Rhannwch \frac{9\sqrt{10}}{10}-1 â -1.

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

Rhannwch -\frac{9\sqrt{10}}{10}-1 â -1.

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

Mae’r hafaliad wedi’i ddatrys nawr.

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