Datrys [900*(1+0.05)^7+600*((1+0.05)^2-1/0.05)*(1+0.05)^3-700]

$$[ 900 \times ( 1 + 0.05 ) ^ { 7 } + 600 \times ( \frac { ( 1 + 0.05 ) ^ { 2 } - 1 } { 0.05 } ) \times ( 1 + 0.05 ) ^ { 3 } - 700 ]$$

Enrhifo

$$1990.269130390625$$

Camau Ateb

Adio 1 a 0.05 i gael 1.05.

$$900\times 1.05^{7}+600\times \frac{\left(1+0.05\right)^{2}-1}{0.05}\left(1+0.05\right)^{3}-700$$

Cyfrifo 1.05 i bŵer 7 a chael 1.40710042265625.

$$900\times 1.40710042265625+600\times \frac{\left(1+0.05\right)^{2}-1}{0.05}\left(1+0.05\right)^{3}-700$$

Lluosi 900 a 1.40710042265625 i gael 1266.390380390625.

$$1266.390380390625+600\times \frac{\left(1+0.05\right)^{2}-1}{0.05}\left(1+0.05\right)^{3}-700$$

Adio 1 a 0.05 i gael 1.05.

$$1266.390380390625+600\times \frac{1.05^{2}-1}{0.05}\left(1+0.05\right)^{3}-700$$

Cyfrifo 1.05 i bŵer 2 a chael 1.1025.

$$1266.390380390625+600\times \frac{1.1025-1}{0.05}\left(1+0.05\right)^{3}-700$$

Tynnu 1 o 1.1025 i gael 0.1025.

$$1266.390380390625+600\times \frac{0.1025}{0.05}\left(1+0.05\right)^{3}-700$$

Ehangu \frac{0.1025}{0.05} drwy luosi'r rhifiadur a'r enwadur gyda 10000.

$$1266.390380390625+600\times \frac{1025}{500}\left(1+0.05\right)^{3}-700$$

Lleihau'r ffracsiwn \frac{1025}{500} i'r graddau lleiaf posib drwy dynnu a chanslo allan 25.

$$1266.390380390625+600\times \frac{41}{20}\left(1+0.05\right)^{3}-700$$

Lluosi 600 a \frac{41}{20} i gael 1230.

$$1266.390380390625+1230\left(1+0.05\right)^{3}-700$$

Adio 1 a 0.05 i gael 1.05.

$$1266.390380390625+1230\times 1.05^{3}-700$$

Cyfrifo 1.05 i bŵer 3 a chael 1.157625.

$$1266.390380390625+1230\times 1.157625-700$$

Lluosi 1230 a 1.157625 i gael 1423.87875.

$$1266.390380390625+1423.87875-700$$

Adio 1266.390380390625 a 1423.87875 i gael 2690.269130390625.

$$2690.269130390625-700$$

Tynnu 700 o 2690.269130390625 i gael 1990.269130390625.

$$1990.269130390625$$

Ffactor

$$\frac{7 \cdot 37 \cdot 4339 \cdot 22669}{2 ^ {12} \cdot 5 ^ {5}} = 1990\frac{3444869}{12800000} = 1990.269130390625$$