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*The degree of the polynomial is even.
This is true since the graph crosses the x-axis 4 times, since 4 is even, we can conclude it is true.
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*The leading coefficient is positive.
This is true since:
[tex]\begin{gathered} \lim _{x\to\infty}f(x)=\infty \\ \lim _{x\to-\infty}f(x)=-\infty \end{gathered}[/tex]-----------------------
*As x→±∞,y→∞.
This is true because of the previous reason
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*The function is a second-degree polynomial.
This is false, the polynomial is 4th-degree
Answer:
The function is a second-degree polynomial.