Answer: The solution set consists of all x satisfying 
, or in interval notation, 
.
- Function,
Answer: A function is a rule which associates to each element in the domain exactly on element in the range. - One-to-one function,
Answer: A function is one-to-one if two different values in the domain are mapped to two different values in the range. - Polynomial function, and
Answer: A polynomial function is a function of the form
- Rational function.
Answer: A rational function is the quotient of two polynomials.
Answer: The real zeros are x=2, x=1, and
.
where a,b,c,d,e and f are
integers and a>0,
- Determine the right-hand and left-hand behavior of the graph of
f(x).
Answer: The graph of f(x) approaches
on the left and 
on the right.
- If -5 and 5 are zeros of f(x), and if f(-2)=12, f(0)=-18,and
f(2)=50, how many real zeros does the function f(x) have?
Answer: The function has at least four distinct real zeros. If counted according to multiplicity, the function has five real roots (x=5 might be a double root).
Answer: c=12.
Answer:
There many other possible solutions.