Respuesta :

Answer: z=6 z=-2

Step-by-step explanation:

(z-6)(z+2)

Think what adds to get -4, but multiplies to get -12, which would be -6 and 2. To find 'z', set it to zero.

z-6=0

z=6

z+2=0
z=-2

Therefore, your answer will be z=-2 and 6.

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