Question

Which expression is equivalent to (r Superscript negative 7 Baseline) Superscript 6?
r Superscript 42
StartFraction 1 Over r Superscript 42 Baseline EndFraction
Negative 7 r Superscript 6
StartFraction 1 Over r EndFraction

Answer 1

(r^{-7})^6 = r^{-7*6} = r^{-42} = 1 / r^{42}.
So the equivalent expression is: StartFraction 1 Over r Superscript 42 Baseline EndFraction.