Datrys 9*10^9((-2*10^-3)(6*10^-3)/0.4^2)

$$9 \times { 10 }^{ 9 } ( \frac{ (-2 \times { 10 }^{ -3 } )(6 \times { 10 }^{ -3 } ) }{ { 0.4 }^{ 2 } } )$$

Enrhifo

$$-675000$$

Camau Ateb

Er mwyn lluosi pwerau sy’n rhannu’r un sail, adiwch eu esbonyddion. Adiwch -3 a -3 i gael -6.

$$9\times 10^{9}\times \frac{-2\times 10^{-6}\times 6}{0.4^{2}}$$

Cyfrifo 10 i bŵer 9 a chael 1000000000.

$$9\times 1000000000\times \frac{-2\times 10^{-6}\times 6}{0.4^{2}}$$

Lluosi 9 a 1000000000 i gael 9000000000.

$$9000000000\times \frac{-2\times 10^{-6}\times 6}{0.4^{2}}$$

Cyfrifo 10 i bŵer -6 a chael \frac{1}{1000000}.

$$9000000000\times \frac{-2\times \frac{1}{1000000}\times 6}{0.4^{2}}$$

Lluosi -2 a \frac{1}{1000000} i gael -\frac{1}{500000}.

$$9000000000\times \frac{-\frac{1}{500000}\times 6}{0.4^{2}}$$

Lluosi -\frac{1}{500000} a 6 i gael -\frac{3}{250000}.

$$9000000000\times \frac{-\frac{3}{250000}}{0.4^{2}}$$

Cyfrifo 0.4 i bŵer 2 a chael 0.16.

$$9000000000\times \frac{-\frac{3}{250000}}{0.16}$$

Mynegwch \frac{-\frac{3}{250000}}{0.16} fel ffracsiwn unigol.

$$9000000000\times \frac{-3}{250000\times 0.16}$$

Lluosi 250000 a 0.16 i gael 40000.

$$9000000000\times \frac{-3}{40000}$$

Gellir ailysgrifennu \frac{-3}{40000} fel -\frac{3}{40000} drwy echdynnu’r arwydd negatif.

$$9000000000\left(-\frac{3}{40000}\right)$$

Lluosi 9000000000 a -\frac{3}{40000} i gael -675000.

$$-675000$$

Ffactor

$$-675000$$