Solve
- $x = \sqrt { 4 x + 21 }$

question 49

Multiple Choice

Solve.
- $x = \sqrt { 4 x + 21 }$

• A) \(- 3,7\)
• B) 3,7
• C) \(- 7\)
• D) 7

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Definitions:

Informal Reasoning

The process of thinking about issues in a non-structured way, often reflecting personal experiences or opinions.

Empirical Data

Information obtained through observation or experimentation that can be verified or disproven through empirical methods.

Scientific Method

A systematic, step-by-step process used by researchers to conduct experiments, aiming to ensure objectivity and reproducibility of findings.

Problem Solving

The process of finding solutions to difficult or complex issues through logical thinking and techniques.