Subtract
- $\frac { 7 x ^ { 2 } - 9 x + 8 } { x ^ { 2 } + 10 x + 21 } - \frac { 6 x ^ { 2 } - 9 x + 57 } { x ^ { 2 } + 10 x + 21 }$

question 98

Multiple Choice

Subtract.
- $\frac { 7 x ^ { 2 } - 9 x + 8 } { x ^ { 2 } + 10 x + 21 } - \frac { 6 x ^ { 2 } - 9 x + 57 } { x ^ { 2 } + 10 x + 21 }$

• A) \(\frac { x ^ { 2 } - 49 } { ( x + 3 ) ( x - 7 ) }\)
• B) \(\frac { 13 x ^ { 2 } - 18 x + 65 } { ( x + 3 ) ( x + 7 ) }\)
• C) \(\frac { x + 7 } { x + 3 }\)
• D) \(\frac { x - 7 } { x + 3 }\)

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Definitions:

Ratio

A quantitative relationship between two numbers, indicating how many times one value is contained or can contain the other.

Sample Variances

A measure of the variance (spread or variability) within a sample data set.

Null Hypothesis

A statement in hypothesis testing that there is no significant difference or effect, serving as the default assumption to be tested against alternative hypotheses.

Population Variances

A measure of the dispersion or spread of a set of data points within a population.