Datrys (1000*0.2-4800)^2+(7000*0.6-4800)^2+(2000*0.2-4800)^2=

$$( 1000 \cdot 0.2 - 4800 ) ^ { 2 } + ( 7000 \cdot 0.6 - 4800 ) ^ { 2 } + ( 2000 \cdot 0.2 - 4800 ) ^ { 2 } =$$

Enrhifo

$$40880000$$

Camau Ateb

Lluosi 1000 a 0.2 i gael 200.

$$\left(200-4800\right)^{2}+\left(7000\times 0.6-4800\right)^{2}+\left(2000\times 0.2-4800\right)^{2}$$

Tynnu 4800 o 200 i gael -4600.

$$\left(-4600\right)^{2}+\left(7000\times 0.6-4800\right)^{2}+\left(2000\times 0.2-4800\right)^{2}$$

Cyfrifo -4600 i bŵer 2 a chael 21160000.

$$21160000+\left(7000\times 0.6-4800\right)^{2}+\left(2000\times 0.2-4800\right)^{2}$$

Lluosi 7000 a 0.6 i gael 4200.

$$21160000+\left(4200-4800\right)^{2}+\left(2000\times 0.2-4800\right)^{2}$$

Tynnu 4800 o 4200 i gael -600.

$$21160000+\left(-600\right)^{2}+\left(2000\times 0.2-4800\right)^{2}$$

Cyfrifo -600 i bŵer 2 a chael 360000.

$$21160000+360000+\left(2000\times 0.2-4800\right)^{2}$$

Adio 21160000 a 360000 i gael 21520000.

$$21520000+\left(2000\times 0.2-4800\right)^{2}$$

Lluosi 2000 a 0.2 i gael 400.

$$21520000+\left(400-4800\right)^{2}$$

Tynnu 4800 o 400 i gael -4400.

$$21520000+\left(-4400\right)^{2}$$

Cyfrifo -4400 i bŵer 2 a chael 19360000.

$$21520000+19360000$$

Adio 21520000 a 19360000 i gael 40880000.

$$40880000$$

Ffactor

$$7\times 73\times 2^{7}\times 5^{4}$$