1.

1). 162). 363). 644). 21

Answer»

$({\left( { - 7776} \right)^{\FRAC{2}{5}}} = {\left[ {\left( { - {2^5}) \times ( - {3^5}} \right)} \right]^{\frac{2}{5}}})$

$( \Rightarrow {\left( { - 2} \right)^{5 \times \frac{2}{5}}} \times {\left( { - 3} \right)^{5\; \times \;\frac{2}{5}}})$

$( \Rightarrow {\left( { - 2} \right)^{2\;}} \times {\left( { - 3} \right)^{2\;}} = 4 \times 9 = 36)$



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