Math Problem Statement
Solution
We are given the function .
Finding the -intercept:
The -intercept occurs when . To find it, we substitute into the function:
Thus, the -intercept is 8.
Finding the -intercepts:
The -intercepts occur when , which happens when any of the factors in the expression equal zero. So, we set each factor equal to zero:
Thus, the -intercepts are 1, -4, 2.
Would you like more details on how these intercepts were calculated?
Here are some additional related questions for practice:
- How would you graph the function ?
- What is the behavior of as approaches large positive or negative values?
- How do the signs of the intercepts affect the shape of the graph?
- What would happen to the intercepts if one of the factors had a different coefficient?
- Could this be expanded into a cubic function, and how would it look?
Tip: For functions in factored form, the intercepts can be quickly found by solving each factor equal to zero!
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Math Problem Analysis
Mathematical Concepts
Algebra
Polynomial Functions
Intercepts
Formulas
Substitution to find intercepts
Theorems
Zero-Product Property
Suitable Grade Level
Grades 9-12
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