Question

simplify :-
$(7(81 {}^{ \frac{1}{2} } + 256 {}^{ {}^{} } \frac{1}{4} )) {}^{4}$

pls answer this question​

Answer 1

$(7( {81}^{1 \div 2} + {256}^{1 \div 4})) ^{4} \\ = (7( {9}^{2 \times 1 \div 2} + {4}^{4 \times 1 \div 4} )) ^{4} \\ = (7(9 + 4)) ^{4} \\ = (7 \times 13) ^{4} = {91}^{4} = 68574961$

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