Easy
Select the equivalent expression of (6−4.8−7)−9(6^{-4} .8^{-7})^{-9}(6−4.8−7)−9
636⋅8636^{36} \cdot 8^{63}636⋅863
65⋅826^{5} \cdot 8^{2}65⋅82
1636⋅863\frac{1}{6^{36} \cdot 8^{63}}636⋅8631
None of the above
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