Module 3: Lesson 2

 

Self-Check 2

2. Questions 2.a, 2.c., 2.e. 3.a., 3.c., and 3.e. on page 133 of the textbook
   2.  
      1. 
         
         P(1) = 0. Therefore, x − 1 is a factor of the polynomial.
         
      3. 
         
         P(1) ≠ 0. Therefore, x − 1 is not a factor of the polynomial.
      5. 
         
         P(1) = 0. Therefore, x − 1 is a factor of the polynomial.
   3.  
      1. 
         
         

         P(−2) ≠ 0. Therefore, x + 2 is not a factor of the polynomial.

      3. 
         
         P(−2) ≠ 0. Therefore, x + 2 is not a factor of the polynomial.
      5. 
         
         P(−2) = 0. Therefore, x + 2 is a factor of the polynomial.

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