Whakaoti i te (1000*0.2-4800)^2+(7000*0.6-4800)^2+(2000*0.2-4800)^2=

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

Aromātai

$$40880000$$

Ngā Upane Otinga

Whakareatia te 1000 ki te 0.2, ka 200.

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

Tangohia te 4800 i te 200, ka -4600.

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

Tātaihia te -4600 mā te pū o 2, kia riro ko 21160000.

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

Whakareatia te 7000 ki te 0.6, ka 4200.

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

Tangohia te 4800 i te 4200, ka -600.

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

Tātaihia te -600 mā te pū o 2, kia riro ko 360000.

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

Tāpirihia te 21160000 ki te 360000, ka 21520000.

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

Whakareatia te 2000 ki te 0.2, ka 400.

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

Tangohia te 4800 i te 400, ka -4400.

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

Tātaihia te -4400 mā te pū o 2, kia riro ko 19360000.

$$21520000+19360000$$

Tāpirihia te 21520000 ki te 19360000, ka 40880000.

$$40880000$$

Tauwehe

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