Multiplication and Division of Polynomials

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1. Given f(x) = 2x + 1 and g(x) = 5x - 2, what is f(x) * g(x)?


  10x2 - x + 2
  10x2 - x - 2
  10x2 + x -2

2. For f(x) and g(x) defined above, what is the domain of the function f(x) * g(x)?

  Domain = all real numbers
  Domain = all real numbers greater than 0
  Domain = all real numbers except 2/5.

3. For f(x) and g(x) defined in question 1, what is the degree of  f(x) * g(x)?

  The degree is 2.
  The degree is 3.
  The degree is 0.

4. Given (1/2)x + 3 and  (1/3)x + 2, what is f(x) * g(x)?

 1/6x^2 + 2x + 6
  (5/6)x + 5
 Sorry, the correct answer is A.  You need to FOIL.


5. What type of polynomial is f(x) * g(x) where f and g are defined in question 4.?

 a monomial
 a binomial
 a trinomial

6. For f(x) = 3x - 1 , what is f(x) * f(x)?

 9x2 - 6x + 1
 9x2 - 6x - 1
 9x2 + 6x + 1

7. For (1/2)x + 3 and  g(x) = 2x, what is f(x) / g(x)?  Do not simplify.

  x - 3
  (1/5)x + 3/2
  (1/2x + 3)/(2x)

8. What is the domain of f(x) / g(x), where f and g are defined in question 7?

  all real numbers except 0
  all positive real numbers
  all real numbers

9. For f(x) = 8x5 - 12x3 + 2x2  and  g(x) = -2x2, determine f(x) / g(x)?

  -4x7 - 6x5 - 1x4
  4x3 - 6x + 1
  -4x3 + 6x - 1

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Copyright © 2000 Donna Tupper.