contestada

What is the simplest form of RootIndex 4 StartRoot 81 x Superscript 8 Baseline y Superscript 5 Baseline EndRoot?
a) 3 x squared (RootIndex 4 StartRoot y Superscript 5 EndRoot
b) 3 x squared y (RootIndex 4 StartRoot y EndRoot)
c) 9 x squared y (RootIndex 4 StartRoot y EndRoot)
d) 9 x Superscript 4 Baseline y squared (RootIndex 4 StartRoot y EndRoot)

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