need faster answer and explain
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328
Step-by-step explanation:
We know 3^4=81
4*81^[-1/2] (81^[1/2] + 81^[3/2])
=4*3^[-4/2] (3^[4/2] + 3^[12/2])
=4* 3^[-2] (3^2 + 3^6 )
=4/3^2 3^2 (1+3^4)
=4 (1+81)
=4*82
=328
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