Datrys sqrt{frac{left(396-3998right)^2+left(398-3998right)^2+left(395-3998right)^2+left(403-3998right)^2+{left(399-3998right)}^{2}+{left(403-3998right)}^{2}+{left(402-3998right)}^2+{left(399-3998right)}^2+{left(404-3998right)}^2+{left(399+3998right)}^2}{90}}

$$\sqrt{ \frac{ { \left(396-3998 \right) }^{ 2 } + { \left(398-3998 \right) }^{ 2 } + { \left(395-3998 \right) }^{ 2 } + { \left(403-3998 \right) }^{ 2 } + { \left(399-3998 \right) }^{ 2 } + { \left(403-3998 \right) }^{ 2 } + { \left(402-3998 \right) }^{ 2 } + { \left(399-3998 \right) }^{ 2 } + { \left(404-3998 \right) }^{ 2 } + { \left(399+3998 \right) }^{ 2 } }{ 90 } }$$

Enrhifo

$$\frac{13\sqrt{2009635}}{15}\approx 1228.600495596$$

Camau Ateb

Tynnu 3998 o 396 i gael -3602.

$$\sqrt{\frac{\left(-3602\right)^{2}+\left(398-3998\right)^{2}+\left(395-3998\right)^{2}+\left(403-3998\right)^{2}+\left(399-3998\right)^{2}+\left(403-3998\right)^{2}+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Cyfrifo -3602 i bŵer 2 a chael 12974404.

$$\sqrt{\frac{12974404+\left(398-3998\right)^{2}+\left(395-3998\right)^{2}+\left(403-3998\right)^{2}+\left(399-3998\right)^{2}+\left(403-3998\right)^{2}+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Tynnu 3998 o 398 i gael -3600.

$$\sqrt{\frac{12974404+\left(-3600\right)^{2}+\left(395-3998\right)^{2}+\left(403-3998\right)^{2}+\left(399-3998\right)^{2}+\left(403-3998\right)^{2}+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Cyfrifo -3600 i bŵer 2 a chael 12960000.

$$\sqrt{\frac{12974404+12960000+\left(395-3998\right)^{2}+\left(403-3998\right)^{2}+\left(399-3998\right)^{2}+\left(403-3998\right)^{2}+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Adio 12974404 a 12960000 i gael 25934404.

$$\sqrt{\frac{25934404+\left(395-3998\right)^{2}+\left(403-3998\right)^{2}+\left(399-3998\right)^{2}+\left(403-3998\right)^{2}+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Tynnu 3998 o 395 i gael -3603.

$$\sqrt{\frac{25934404+\left(-3603\right)^{2}+\left(403-3998\right)^{2}+\left(399-3998\right)^{2}+\left(403-3998\right)^{2}+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Cyfrifo -3603 i bŵer 2 a chael 12981609.

$$\sqrt{\frac{25934404+12981609+\left(403-3998\right)^{2}+\left(399-3998\right)^{2}+\left(403-3998\right)^{2}+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Adio 25934404 a 12981609 i gael 38916013.

$$\sqrt{\frac{38916013+\left(403-3998\right)^{2}+\left(399-3998\right)^{2}+\left(403-3998\right)^{2}+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Tynnu 3998 o 403 i gael -3595.

$$\sqrt{\frac{38916013+\left(-3595\right)^{2}+\left(399-3998\right)^{2}+\left(403-3998\right)^{2}+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Cyfrifo -3595 i bŵer 2 a chael 12924025.

$$\sqrt{\frac{38916013+12924025+\left(399-3998\right)^{2}+\left(403-3998\right)^{2}+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Adio 38916013 a 12924025 i gael 51840038.

$$\sqrt{\frac{51840038+\left(399-3998\right)^{2}+\left(403-3998\right)^{2}+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Tynnu 3998 o 399 i gael -3599.

$$\sqrt{\frac{51840038+\left(-3599\right)^{2}+\left(403-3998\right)^{2}+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Cyfrifo -3599 i bŵer 2 a chael 12952801.

$$\sqrt{\frac{51840038+12952801+\left(403-3998\right)^{2}+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Adio 51840038 a 12952801 i gael 64792839.

$$\sqrt{\frac{64792839+\left(403-3998\right)^{2}+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Tynnu 3998 o 403 i gael -3595.

$$\sqrt{\frac{64792839+\left(-3595\right)^{2}+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Cyfrifo -3595 i bŵer 2 a chael 12924025.

$$\sqrt{\frac{64792839+12924025+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Adio 64792839 a 12924025 i gael 77716864.

$$\sqrt{\frac{77716864+\left(402-3998\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Tynnu 3998 o 402 i gael -3596.

$$\sqrt{\frac{77716864+\left(-3596\right)^{2}+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Cyfrifo -3596 i bŵer 2 a chael 12931216.

$$\sqrt{\frac{77716864+12931216+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Adio 77716864 a 12931216 i gael 90648080.

$$\sqrt{\frac{90648080+\left(399-3998\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Tynnu 3998 o 399 i gael -3599.

$$\sqrt{\frac{90648080+\left(-3599\right)^{2}+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Cyfrifo -3599 i bŵer 2 a chael 12952801.

$$\sqrt{\frac{90648080+12952801+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Adio 90648080 a 12952801 i gael 103600881.

$$\sqrt{\frac{103600881+\left(404-3998\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Tynnu 3998 o 404 i gael -3594.

$$\sqrt{\frac{103600881+\left(-3594\right)^{2}+\left(399+3998\right)^{2}}{90}}$$

Cyfrifo -3594 i bŵer 2 a chael 12916836.

$$\sqrt{\frac{103600881+12916836+\left(399+3998\right)^{2}}{90}}$$

Adio 103600881 a 12916836 i gael 116517717.

$$\sqrt{\frac{116517717+\left(399+3998\right)^{2}}{90}}$$

Adio 399 a 3998 i gael 4397.

$$\sqrt{\frac{116517717+4397^{2}}{90}}$$

Cyfrifo 4397 i bŵer 2 a chael 19333609.

$$\sqrt{\frac{116517717+19333609}{90}}$$

Adio 116517717 a 19333609 i gael 135851326.

$$\sqrt{\frac{135851326}{90}}$$

Lleihau'r ffracsiwn \frac{135851326}{90} i'r graddau lleiaf posib drwy dynnu a chanslo allan 2.

$$\sqrt{\frac{67925663}{45}}$$

Ailysgrifennu ail isradd y rhaniad \sqrt{\frac{67925663}{45}} fel rhaniad ail israddau \frac{\sqrt{67925663}}{\sqrt{45}}.

$$\frac{\sqrt{67925663}}{\sqrt{45}}$$

Ffactora 67925663=13^{2}\times 401927. Ailysgrifennu ail isradd y lluoswm \sqrt{13^{2}\times 401927} fel lluoswm ail israddau \sqrt{13^{2}}\sqrt{401927}. Cymryd isradd 13^{2}.

$$\frac{13\sqrt{401927}}{\sqrt{45}}$$

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}.

$$\frac{13\sqrt{401927}}{3\sqrt{5}}$$

Mae'n rhesymoli enwadur \frac{13\sqrt{401927}}{3\sqrt{5}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{5}.

$$\frac{13\sqrt{401927}\sqrt{5}}{3\left(\sqrt{5}\right)^{2}}$$

Sgwâr \sqrt{5} yw 5.

$$\frac{13\sqrt{401927}\sqrt{5}}{3\times 5}$$

I luosi \sqrt{401927} a \sqrt{5}, dylid lluosi'r rhifau dan yr ail isradd.

$$\frac{13\sqrt{2009635}}{3\times 5}$$

Lluosi 3 a 5 i gael 15.

$$\frac{13\sqrt{2009635}}{15}$$