Whakaoti i te 9*10^9((-5*10^-6)(-4*10^-6)/0.2^2)

$$9 \times { 10 }^{ 9 } ( \frac{ (-5 \times { 10 }^{ -6 } )(-4 \times { 10 }^{ -6 } ) }{ { 0.2 }^{ 2 } } )$$

Aromātai

$$4.5$$

Ngā Upane Otinga

Hei whakarea i ngā pū o te pūtake kotahi, me tāpiri ō rātou taupū. Tāpiria te -6 me te -6 kia riro ai te -12.

$$9\times 10^{9}\times \frac{-5\times 10^{-12}\left(-4\right)}{0.2^{2}}$$

Tātaihia te 10 mā te pū o 9, kia riro ko 1000000000.

$$9\times 1000000000\times \frac{-5\times 10^{-12}\left(-4\right)}{0.2^{2}}$$

Whakareatia te 9 ki te 1000000000, ka 9000000000.

$$9000000000\times \frac{-5\times 10^{-12}\left(-4\right)}{0.2^{2}}$$

Tātaihia te 10 mā te pū o -12, kia riro ko \frac{1}{1000000000000}.

$$9000000000\times \frac{-5\times \frac{1}{1000000000000}\left(-4\right)}{0.2^{2}}$$

Whakareatia te -5 ki te \frac{1}{1000000000000}, ka -\frac{1}{200000000000}.

$$9000000000\times \frac{-\frac{1}{200000000000}\left(-4\right)}{0.2^{2}}$$

Whakareatia te -\frac{1}{200000000000} ki te -4, ka \frac{1}{50000000000}.

$$9000000000\times \frac{\frac{1}{50000000000}}{0.2^{2}}$$

Tātaihia te 0.2 mā te pū o 2, kia riro ko 0.04.

$$9000000000\times \frac{\frac{1}{50000000000}}{0.04}$$

Tuhia te \frac{\frac{1}{50000000000}}{0.04} hei hautanga kotahi.

$$9000000000\times \frac{1}{50000000000\times 0.04}$$

Whakareatia te 50000000000 ki te 0.04, ka 2000000000.

$$9000000000\times \frac{1}{2000000000}$$

Whakareatia te 9000000000 ki te \frac{1}{2000000000}, ka \frac{9}{2}.

$$\frac{9}{2}$$

Tauwehe

$$\frac{3 ^ {2}}{2} = 4\frac{1}{2} = 4.5$$