Datrys 9*10^9((-5*10^-6)(-4*10^-6)/0.2^2)

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

Enrhifo

$$4.5$$

Camau Ateb

Er mwyn lluosi pwerau sy’n rhannu’r un sail, adiwch eu esbonyddion. Adiwch -6 a -6 i gael -12.

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

Cyfrifo 10 i bŵer 9 a chael 1000000000.

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

Lluosi 9 a 1000000000 i gael 9000000000.

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

Cyfrifo 10 i bŵer -12 a chael \frac{1}{1000000000000}.

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

Lluosi -5 a \frac{1}{1000000000000} i gael -\frac{1}{200000000000}.

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

Lluosi -\frac{1}{200000000000} a -4 i gael \frac{1}{50000000000}.

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

Cyfrifo 0.2 i bŵer 2 a chael 0.04.

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

Mynegwch \frac{\frac{1}{50000000000}}{0.04} fel ffracsiwn unigol.

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

Lluosi 50000000000 a 0.04 i gael 2000000000.

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

Lluosi 9000000000 a \frac{1}{2000000000} i gael \frac{9}{2}.

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

Ffactor

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