Solve the Problem $( a - 9 ) ( a + 9 )$

question 359

Multiple Choice

Solve the problem.
- $( a - 9 ) ( a + 9 )$

• A) \(a ^ { 2 } - 18 a - 81\)
• B) \(a ^ { 2 } - 18\)
• C) \(a ^ { 2 } - 81\)
• D) \(a ^ { 2 } + 18 a - 81\)

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Definitions:

Variables

Elements or features that can change and affect the outcome of a model or experiment, often used in research to measure and analyze differences.

Direction

The course along which someone or something moves, or is aimed or pointed.

Positive

Characterized by or denoting an affirmation, addition, or increase, often associated with beneficial outcomes.

Cold Drinks

Beverages that are served chilled, commonly refreshing and enjoyed in hot conditions.