Simplify Express Your Answer with Positive Exponents $$\left( - 4 x ^ { - 3 } \right) \left( 9 x ^ { - 5 } \right)$$

question 78

Multiple Choice

Simplify. Express your answer with positive exponents. Assume that all variables are nonzero.
- $$\left( - 4 x ^ { - 3 } \right) \left( 9 x ^ { - 5 } \right)$$

• A) \(x ^ { 15 }\)
• B) \(- 36 x ^ { 8 }\)
• C) \(- 36 x ^{15}\)
• D) \(\frac { - 36 } { x ^ { 8 } }\)

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