Datrys ar gyfer a
a=\frac{\sqrt{23835}}{28}-1\approx 4.513781435
a=-\frac{\sqrt{23835}}{28}-1\approx -6.513781435
Rhannu
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\frac{112\left(a+1\right)^{2}}{112}=\frac{3405}{112}
Rhannu’r ddwy ochr â 112.
\left(a+1\right)^{2}=\frac{3405}{112}
Mae rhannu â 112 yn dad-wneud lluosi â 112.
a+1=\frac{\sqrt{23835}}{28} a+1=-\frac{\sqrt{23835}}{28}
Cymryd isradd dwy ochr yr hafaliad.
a+1-1=\frac{\sqrt{23835}}{28}-1 a+1-1=-\frac{\sqrt{23835}}{28}-1
Tynnu 1 o ddwy ochr yr hafaliad.
a=\frac{\sqrt{23835}}{28}-1 a=-\frac{\sqrt{23835}}{28}-1
Mae tynnu 1 o’i hun yn gadael 0.
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