Factor the Following Expression

question 74

Multiple Choice

Factor the following expression:

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Definitions:

Independent Variable

The variable in an experiment that is manipulated or changed by the researcher to determine its effect on the dependent variable.

Placebo

A substance with no therapeutic effect, often used as a control in testing new drugs.

Control Group

In an experiment, a group of subjects that does not receive the treatment being tested and is used as a benchmark to measure how the other tested subjects do.

Dependent Variable

In scientific research, the variable that is tested and measured; it is 'dependent' on the independent variable.