Simplify so that the result has only positive exponents.

MATHEMATICS · Single correct · AoPS · Mathematics · Follow the Rules · Follow the Rules

Problem

Simplify

\dfrac{a^{-2}b^{3}}{a\,b^{-4}}

so that the result has only positive exponents. (a)

\dfrac{a^{3}}{b^{7}}

(b)

a^{3}b^{7}

(c)

\dfrac{b^{7}}{a^{3}}

(d)

\dfrac{b^{3}}{a^{3}b^{4}}