Multiply Using the Rule for the Product of the Sum $\left( 5 a ^ { n } + 4 \right) \left( 5 a ^ { n } - 4 \right)$

question 45

Multiple Choice

Multiply using the rule for the product of the sum and difference of two terms. Assume any variable exponents represent whole numbers.
- $\left( 5 a ^ { n } + 4 \right) \left( 5 a ^ { n } - 4 \right)$

• A) \(25 a ^ { n } - 16\)
• B) \(5 a ^ { 2 n } - 16\)
• C) \(25 a ^ { 2 n } + 40 a ^ { n } - 16\)
• D) \(25 a ^ { 2 n } - 16\)

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