Exponents

Algebra Level 3

If 4x=10244^x= 1024 then (4x+1)(5x1)=?(4^{x+1})(5^{x-1})=?

A. 10610^6

B. 54×1055^4\times 10^5

C. 44×1054^4\times 10^5

D. 54×1045^4\times 10^4

E. 44×1044^4\times 10^4

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