Datrys ar gyfer x
x=\sqrt{23}-5\approx -0.204168477
x=-\left(\sqrt{23}+5\right)\approx -9.795831523
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Rhannu
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x+5=\sqrt{23} x+5=-\sqrt{23}
Cymryd isradd dwy ochr yr hafaliad.
x+5-5=\sqrt{23}-5 x+5-5=-\sqrt{23}-5
Tynnu 5 o ddwy ochr yr hafaliad.
x=\sqrt{23}-5 x=-\sqrt{23}-5
Mae tynnu 5 o’i hun yn gadael 0.
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