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15 September, 06:27

Solve the equation by completing the square: z^2 - 2z = 323

a. - 17, 19

b. - 17, - 19

c. 17, - 19

d. 17, 19

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Answers (1)
  1. 15 September, 09:56
    0
    Answer: A. - 17, 19

    Step-by-step explanation:

    Move all terms to one side.

    z^2-2z-323=0



    z^2 - 2z-323=0

    Factor : z^2-2z-323

    z^2-2z-323.

    (z-19) (z+17) = 0 (z-19) (z+17) = 0

    Solve for z.

    z=19,-17
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