Datrys ar gyfer x
x=3\sqrt{5}+2-\sqrt{82}\approx -0.347181206
Neilltuo x
x≔3\sqrt{5}+2-\sqrt{82}
Graff
Rhannu
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x=2+3\sqrt{5}-\frac{1}{2}\sqrt{328}
Ffactora 45=3^{2}\times 5. Ailysgrifennu ail isradd y lluoswm \sqrt{3^{2}\times 5} fel lluoswm ail israddau \sqrt{3^{2}}\sqrt{5}. Cymryd isradd 3^{2}.
x=2+3\sqrt{5}-\frac{1}{2}\times 2\sqrt{82}
Ffactora 328=2^{2}\times 82. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 82} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{82}. Cymryd isradd 2^{2}.
x=2+3\sqrt{5}-\sqrt{82}
Canslo 2 a 2.
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