Question

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

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

Answer 1

Answer: A. -17 , 19

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