Simplify the Expression $$\left( \frac { a ^ { - 5 } } { b ^ { - 3 } } \right) ^ { - 4 }$$

question 21

Multiple Choice

Simplify the expression. $$\left( \frac { a ^ { - 5 } } { b ^ { - 3 } } \right) ^ { - 4 }$$
Write the answer without using negative exponents. Assume that all variables are restricted to those numbers for which the expression is defined.

• A) \(\quad \frac { a ^ { 12 } } { b ^ { 20 } }\)
• B) \(\quad \frac { a ^ { 20 } } { b ^ { 12 } }\)
• C) \(\quad \frac { b ^ { 12 } } { a ^ { 20 } }\)
• D) \(\quad \frac { b ^ { 20 } } { a ^ { 12 } }\)

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