Solve the Equation $\sqrt { x + 6 } + \sqrt { 2 - x } = 4$

question 106

Multiple Choice

Solve the equation.
- $\sqrt { x + 6 } + \sqrt { 2 - x } = 4$

• A) \(\{ \sqrt { 31 } , - 2 \}\)
• B) \(\{ 2 , - 2 \}\)
• C) \(\{ - 2 \}\)
• D) \(\{ 0 \}\)

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Definitions:

Confounding Variables

Variables that the researcher failed to control or eliminate, which can cause a false association between the studied variables.

Control Group

Group of participants in an experiment not exposed to the independent variable.

Survey Research

Research methods obtaining information directly from a group of people regarding their opinions, beliefs, or behavior.

Non-experimental Research

Observational research in which the researcher does not actively manipulate variables but observes natural occurrences.