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MathematicsMathematics
6 November, 22:25

Match the polynomial to the correct description:

(X+4) (x-1) (x-2) (x-4)

A. The related polynomial equation has a total of four roots; all four roots are real.

B. the related polynomial equation has a total of four roots, all four roots are real and one root has a multiplicity of 2.

C. The related polynomial equation has a total of four roots, two roots are complex and two roots are real.

D. The related polynomial equation has a total of two roots, both roots are real and have a multiplicity of 2.

E. The related polynomial equation has a total of three roots, two roots are complex and one root is real.

F. The related polynomial equation has a total of four roots, two roots are complex and one root is real with a. Multiplicity of 2.

+5
Answers (1)
  1. 7 November, 00:16
    0
    A

    Step-by-step explanation:

    The polynomial (x+4) (x-1) (x-2) (x-4) has zeros at x=-4,1,2,4.

    The related polynomial equation is (x+4) (x-1) (x-2) (x-4) = 0.

    In order for this equation to be true at least one of the factors must by 0 that is the only way a product can be zero (if one of it's factors is).

    So you wind up needing to solve these 4 equations:

    x+4=0 x-1=0 x-2=0 x-4=0

    x=-4 x=1 x=2 x=4

    First equation, I subtracted 4 on both sides.

    Second equation, I added 1 on both sides.

    Third equation, I added 2 on both sides.

    Fourth equation, I added 4 on both sides.

    -4,1,2,4 are all integers

    Integers are real numbers.

    So A.
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Home » Mathematics » Match the polynomial to the correct description: (X+4) (x-1) (x-2) (x-4) A. The related polynomial equation has a total of four roots; all four roots are real. B.
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