content area top Part 1 Simplify. Assume that all variables represent positive real numbers. 9 x RootIndex 3 StartRoot xy squared EndRoot minus 2 RootIndex 3 StartRoot 125 x Superscript 4 Baseline y squared EndRoot Question content area bottom Part 1 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. 9 x RootIndex 3 StartRoot xy squared EndRoot minus 2 RootIndex 3 StartRoot 125 x Superscript 4 Baseline y squared EndRootequals enter your response here (Simplify your answer. Type an exact answer, using radicals as needed.) B. The expression cannot be simplified