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29-04-2020
Mathematics

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

a. -17, 19
b. -17, -19
c. 17, -19
d. 17, 19

Respuesta :

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30-04-2020

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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