Problem Statement
If 4^x \minus{} 4^{x \minus{} 1} \equal{} 24, then (2x)x equals:
<spanclass=′latex−bold′>(A)</span> 55<spanclass=′latex−bold′>(B)</span> 5<spanclass=′latex−bold′>(C)</span> 255<spanclass=′latex−bold′>(D)</span> 125<spanclass=′latex−bold′>(E)</span> 25