2 years ago

Question 2 of 10

1 answer:

8 0

Answer:

Step-by-step explanation:

Use the general formula of quadratic equation:

$x_{1,2}=\dfrac{-b \pm\sqrt{b^2-4ac} }{2a} = \dfrac{6\pm\sqrt{36-40}}{4}=\dfrac{6\pm2i}{4} = \dfrac{3\pm i}{2}$

Thus we choose D

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