Find the Real Zeros, If Any, of Each Quadratic Function $$f ( x ) = 5 x ^ { 2 } - 18 x - 8$$

question 152

Multiple Choice

Find the real zeros, if any, of each quadratic function using the quadratic formula. List the x-intercepts, if any, of the
graph of the function.
- $$f ( x ) = 5 x ^ { 2 } - 18 x - 8$$

• A) \(x = - \frac { 2 } { 5 } , x = 4\)
• B) \(x = \frac { 2 } { 5 } , x = - 4\)
• C) \(x = - \frac { 4 } { 5 } , x = 8\)
• D) \(x = - 2 , x = 4\)

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Definitions:

Single-Factor Research

An experimental design where the effect of a single independent variable on a dependent variable is assessed.

Independent Variable

A variable that is manipulated or categorized to observe its effect on a dependent variable in experimental research.

Interaction Effect

In statistics, a circumstance where the effect of one independent variable on a dependent variable is different at different levels of another independent variable.

Main Effect

The immediate effect that an independent variable has on a dependent variable within an experimental framework.