Solve the Equation by Completing the Square $x ^ { 2 } - 4 x - 5 = 0$

question 35

Multiple Choice

Solve the equation by completing the square. $x ^ { 2 } - 4 x - 5 = 0$

• A) \(x = - 2\) , \(x = 5\)
• B) \(x = 4\) , \(x = 5\)
• C) \(x = 1\) , \(x = 5\)
• D) \(x = - 1\) , \(x = 5\)
• E) \(x = - 10\) , \(x = 2\)

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Definitions:

Experimenter Bias

The influence of the researcher's expectations or personal beliefs on the outcomes of an experiment.

Subject Bias

A tendency for participants in research to respond or behave in a certain way because they are aware they are being studied.

Confounds

Variables that are external to the experimental design itself and can affect the results, thereby casting doubt on the reliability of the conclusions.

Selection Bias

A distortion in statistical analysis resulting from the method of collecting samples.