Simplify the Expression $- 5 \left[ 8 x ^ { 2 } + 9 ( - 4 - x ) \right]$

question 170

Multiple Choice

Simplify the expression. If the expression cannot be simplified, so state.
- $- 5 \left[ 8 x ^ { 2 } + 9 ( - 4 - x ) \right]$

• A) \(- 40 x ^ { 2 } - 45 x + 180\)
• B) \(- 40 x ^ { 2 } + 5 x + 180\)
• C) \(- 40 x ^ { 2 } + 45 x + 180\)
• D) \(- 40 x ^ { 2 } - 9 x - 36\)

Recognize the importance of randomized controlled trials as the "gold standard" in research design.

Identify the components and significance of a cause-and-effect relationship in epidemiological studies.

Comprehend the role and interpretation of statistical analysis in epidemiological research, including meta-analyses.

Understand the concept of validity and reliability in the context of testing and measurement.

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