Factor Completely $25 b ^ { 2 } - 16$ A) $( 8 b - 4 ) ( 8 b + 4 )$

question 15

Multiple Choice

Factor completely. Check by multiplying the factors. $25 b ^ { 2 } - 16$

• A) \(( 8 b - 4 ) ( 8 b + 4 )\)
• B) \(( 25 b - 4 ) ( b + 4 )\)
• C) \(( 6 b - 4 ) ( 6 b + 4 )\)
• D) \(( 5 b - 4 ) ( 5 b + 4 )\)
• E) \(( 5 b + 4 ) ( 5 b + 4 )\)

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Definitions:

Unequal-variances Test

A statistical method used when comparing two groups or samples that are assumed to have different variances, to evaluate if their means are significantly different.

Independent Populations

Populations that are not related or affected by each other, allowing for assumptions of independence in statistical tests.

T-test

A statistical test used to compare the means of two groups to determine if there is a significant difference between them.

Degrees of Freedom

The count of independent figures or measures that can be designated to a statistical distribution.