Datrys (x-1)^2=5

$$( x - 1 ) ^ { 2 } = 5$$

Datrys ar gyfer x

$$x=\sqrt{5}+1\approx 3.236067977$$

$$x=1-\sqrt{5}\approx -1.236067977$$

Camau drwy Ganfod Isradd

Cymryd isradd dwy ochr yr hafaliad.

$$x-1=\sqrt{5} x-1=-\sqrt{5}$$

Adio 1 at ddwy ochr yr hafaliad.

$$x-1-\left(-1\right)=\sqrt{5}-\left(-1\right) x-1-\left(-1\right)=-\sqrt{5}-\left(-1\right)$$

Mae tynnu -1 o’i hun yn gadael 0.

$$x=\sqrt{5}-\left(-1\right) x=-\sqrt{5}-\left(-1\right)$$

Tynnu -1 o \sqrt{5}.

$$x=\sqrt{5}+1$$

Tynnu -1 o -\sqrt{5}.

$$x=1-\sqrt{5}$$

Mae’r hafaliad wedi’i ddatrys nawr.

$$x=\sqrt{5}+1 x=1-\sqrt{5}$$