maddymcg408
Answered

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16. PLEASE HELP ME
Solve the equation by factoring.

z2 - 6z - 27 = 0

A. z = 3 or z = 9

B. z = –3 or z = 9

C. z = –3 or z = –9

D. z = 3 or z = –9

Sagot :

Answer:

B

Step-by-step explanation:

z^2 - 6z - 27 = 0

(z - 9)(z+3) = 0

z - 9 = 0 z + 3 = 0

z = -3, 9
The third one is a solution
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