Question

please answer my questions I will mark as brainliast
​

Answer 1

Step-by-step explanation:

=> 4 × ( 81 )^1\2 × { 81 ^1\2 + 81^3\2 }

=> 324^1\2 { 162+1\2 + 162+3\2 }

=> 324^1\2 { 163+165 \ 2 }

=> 324^1\2 { 328 \ 2 }

=> 324^1\2 {164}

=> 324^1 + 82

=> 324 + 82

=> 406