Datrys (x-5)^2=7

$$( x - 5 ) ^ { 2 } = 7$$

Datrys ar gyfer x

$$x=\sqrt{7}+5\approx 7.645751311$$

$$x=5-\sqrt{7}\approx 2.354248689$$

Camau drwy Ganfod Isradd

Cymryd isradd dwy ochr yr hafaliad.

$$x-5=\sqrt{7} x-5=-\sqrt{7}$$

Adio 5 at ddwy ochr yr hafaliad.

$$x-5-\left(-5\right)=\sqrt{7}-\left(-5\right) x-5-\left(-5\right)=-\sqrt{7}-\left(-5\right)$$

Mae tynnu -5 o’i hun yn gadael 0.

$$x=\sqrt{7}-\left(-5\right) x=-\sqrt{7}-\left(-5\right)$$

Tynnu -5 o \sqrt{7}.

$$x=\sqrt{7}+5$$

Tynnu -5 o -\sqrt{7}.

$$x=5-\sqrt{7}$$

Mae’r hafaliad wedi’i ddatrys nawr.

$$x=\sqrt{7}+5 x=5-\sqrt{7}$$