The value of $\frac{5.71\times 5.71\times 5.71-2.79\times 2.79\times 2.79}{5.71\times 5.71 +5.71\times 2.79+ 2.79\times 2.79}$ in simplified form is :

The value of $\frac{5.71\times 5.71\times 5.71-2.79\times 2.79\times 2.79}{5.71\times 5.71 +5.71\times 2.79+ 2.79\times 2.79}$ in simplified form is :
1). 8.5
2). 8.6
3). 2.82
4). 2.92

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