To find a quartic function with only real zeros at and , we can construct a function in the form , where has no real zeros.
Analysis of this function:
- The factors and give zeros and .
- The factor has no real zeros since implies , which has no real solutions.
So, the quartic function with only real zeros at and is .
Let's expand .
First, expand :
.
Now, multiply by :
.
Analysis of Options:
A. :
- This is the function we obtained by expanding our constructed quartic function.
- Conclusion: This function has zeros at and .
B. :
- To check if