1 )Consider the polynomial f ( x ) = ( x − 1 ) ( x + 2 ) ( x − 3 ) ( x + 5 ). What are the roots of f? Suppose you were to multiply the polynomial out; what would the leading coefficient of f be? Suppose you were to multiply the polynomial out; what would the constant term of f be?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter4: Polynomial And Rational Functions
Section4.3: Zeros Of Polynomials
Problem 43E
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1 )Consider the polynomial f ( x ) = ( x − 1 ) ( x + 2 ) ( x − 3 ) ( x + 5 ).

  • What are the roots of f?
  • Suppose you were to multiply the polynomial out; what would the leading coefficient of f be?
  • Suppose you were to multiply the polynomial out; what would the constant term of f be?

2) Now let's attempt to work a similar problem backwards. Suppose you have a polynomial with leading coefficient 12 and constant term 15; if the polynomial has rational roots, what are the possibilities for what they look like?

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