5. Solve the equation z^2 + 4z - 9 = 0 by completing the square.
A. Z = 2 + N13
B. Z= 4 + 113...
![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 13.12.2020 02:10, Dweath50
5. Solve the equation z^2 + 4z - 9 = 0 by completing the square.
A. Z = 2 + N13
B. Z= 4 + 113
C. Z=-2 + V13
D. z = -4 + 13
![answer](/tpl/images/cats/otvet.png)
Answers: 2
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