Factor the Polynomial $$7 x ^ { 2 } z - 7 x z - 42 z$$

question 260

Multiple Choice

Factor the polynomial.
- $$7 x ^ { 2 } z - 7 x z - 42 z$$

• A) \(7 \mathrm { z } ( \mathrm { x } + 2 ) ( \mathrm { x } - 3 )\)
• B) \(7 \mathrm { z } ( \mathrm { x } - 2 ) ( \mathrm { x } + 3 )\)
• C) \(7 ( x z + 2 ) ( x z - 3 )\)
• D) prime polynomial

---

Definitions:

Independent Variable

A variable in an experiment that is manipulated or changed by the researcher to study its effects on the dependent variable.

Extraneous Variable

A variable that is not of interest in a study but may affect the outcome of the experiment if not controlled.

Control Group

In research, a control group is a group of subjects not exposed to the experimental treatment, used as a benchmark to measure the effect of the treatment.

Independent Variable

A variable that is manipulated in an experiment to see its effect on a dependent variable.