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Mathematics
Mathematics
Problem
Simplify
a
−
2
b
3
a
b
−
4
\dfrac{a^{-2}b^{3}}{a\,b^{-4}}
a
b
−
4
a
−
2
b
3
so that the result has only positive exponents. a)
a
3
b
7
\dfrac{a^{3}}{b^{7}}
b
7
a
3
b)
a
3
b
7
a^{3}b^{7}
a
3
b
7
c)
b
7
a
3
\dfrac{b^{7}}{a^{3}}
a
3
b
7
d)
b
3
a
3
b
4
\dfrac{b^{3}}{a^{3}b^{4}}
a
3
b
4
b
3
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