Answer:
The correct answer option is [tex] \frac {a ^ 3 b^4 } {a b^2} [/tex].
Step-by-step explanation:
We are given the following expression and we are to figure out which of the given answer options show the expression after the negative exponents have been eliminated:
[tex] \frac {a^3 b^{-2}} {a b^{-4}} [/tex]
When negative exponent changes sign, then it moves from numerator to denominator or from denominator to numerator.
[tex] \frac {a^3 b^4} {ab^2} [/tex]
