Datrys 4*10^-5*4*10^-5/0.79^2*9*10^9/2.2=

$$\frac { 4 \cdot 10 ^ { - 5 } \cdot 4 \cdot 10 ^ { - 5 } } { 0.79 ^ { 2 } } \cdot \frac { 9 \cdot 10 ^ { 9 } } { 2.2 } =$$

Enrhifo

$$\frac{720000}{68651}\approx 10.487829748$$

Camau Ateb

Er mwyn lluosi pwerau sy’n rhannu’r un sail, adiwch eu esbonyddion. Adiwch -5 a -5 i gael -10.

$$\frac{4\times 10^{-10}\times 4}{0.79^{2}}\times \frac{9\times 10^{9}}{2.2}$$

Cyfrifo 10 i bŵer -10 a chael \frac{1}{10000000000}.

$$\frac{4\times \frac{1}{10000000000}\times 4}{0.79^{2}}\times \frac{9\times 10^{9}}{2.2}$$

Lluosi 4 a \frac{1}{10000000000} i gael \frac{1}{2500000000}.

$$\frac{\frac{1}{2500000000}\times 4}{0.79^{2}}\times \frac{9\times 10^{9}}{2.2}$$

Lluosi \frac{1}{2500000000} a 4 i gael \frac{1}{625000000}.

$$\frac{\frac{1}{625000000}}{0.79^{2}}\times \frac{9\times 10^{9}}{2.2}$$

Cyfrifo 0.79 i bŵer 2 a chael 0.6241.

$$\frac{\frac{1}{625000000}}{0.6241}\times \frac{9\times 10^{9}}{2.2}$$

Mynegwch \frac{\frac{1}{625000000}}{0.6241} fel ffracsiwn unigol.

$$\frac{1}{625000000\times 0.6241}\times \frac{9\times 10^{9}}{2.2}$$

Lluosi 625000000 a 0.6241 i gael 390062500.

$$\frac{1}{390062500}\times \frac{9\times 10^{9}}{2.2}$$

Cyfrifo 10 i bŵer 9 a chael 1000000000.

$$\frac{1}{390062500}\times \frac{9\times 1000000000}{2.2}$$

Lluosi 9 a 1000000000 i gael 9000000000.

$$\frac{1}{390062500}\times \frac{9000000000}{2.2}$$

Ehangu \frac{9000000000}{2.2} drwy luosi'r rhifiadur a'r enwadur gyda 10.

$$\frac{1}{390062500}\times \frac{90000000000}{22}$$

Lleihau'r ffracsiwn \frac{90000000000}{22} i'r graddau lleiaf posib drwy dynnu a chanslo allan 2.

$$\frac{1}{390062500}\times \frac{45000000000}{11}$$

Lluosi \frac{1}{390062500} a \frac{45000000000}{11} i gael \frac{720000}{68651}.

$$\frac{720000}{68651}$$

Ffactor

$$\frac{2 ^ {7} \cdot 3 ^ {2} \cdot 5 ^ {4}}{11 \cdot 79 ^ {2}} = 10\frac{33490}{68651} = 10.487829747563765$$