Datrys (-7)^{3}:(+7)^{2}-2^3:12^0*(-9)^12:(-3)^21=

$$( - 7 ) ^ { 3 } : ( + 7 ) ^ { 2 } - 2 ^ { 3 } : 12 ^ { 0 } \cdot ( - 9 ) ^ { 12 } : ( - 3 ) ^ { 21 } =$$

Enrhifo

$$209$$

Camau Ateb

Cyfrifo -7 i bŵer 3 a chael -343.

$$\frac{-343}{7^{2}}-\frac{\frac{2^{3}}{12^{0}}\left(-9\right)^{12}}{\left(-3\right)^{21}}$$

Cyfrifo 7 i bŵer 2 a chael 49.

$$\frac{-343}{49}-\frac{\frac{2^{3}}{12^{0}}\left(-9\right)^{12}}{\left(-3\right)^{21}}$$

Rhannu -343 â 49 i gael -7.

$$-7-\frac{\frac{2^{3}}{12^{0}}\left(-9\right)^{12}}{\left(-3\right)^{21}}$$

Cyfrifo 2 i bŵer 3 a chael 8.

$$-7-\frac{\frac{8}{12^{0}}\left(-9\right)^{12}}{\left(-3\right)^{21}}$$

Cyfrifo 12 i bŵer 0 a chael 1.

$$-7-\frac{\frac{8}{1}\left(-9\right)^{12}}{\left(-3\right)^{21}}$$

Mae rhannu unrhyw beth ag un yn rhoi'r rhif hwnnw.

$$-7-\frac{8\left(-9\right)^{12}}{\left(-3\right)^{21}}$$

Cyfrifo -9 i bŵer 12 a chael 282429536481.

$$-7-\frac{8\times 282429536481}{\left(-3\right)^{21}}$$

Lluosi 8 a 282429536481 i gael 2259436291848.

$$-7-\frac{2259436291848}{\left(-3\right)^{21}}$$

Cyfrifo -3 i bŵer 21 a chael -10460353203.

$$-7-\frac{2259436291848}{-10460353203}$$

Rhannu 2259436291848 â -10460353203 i gael -216.

$$-7-\left(-216\right)$$

Gwrthwyneb -216 yw 216.

$$-7+216$$

Adio -7 a 216 i gael 209.

$$209$$

Ffactor

$$11\times 19$$