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I have to solve this equation $5z^2+6z+2=0$ where $z$ is a complex number.. I tried writing $z=\alpha+\beta i$ but still nothing..I tried finding the roots but the discriminant is negative $= 36-4\cdot 5 \cdot 2 =-4$ what do I do?

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    The discriminant is negative --- yes, that's the first idea of complex numbers, they let you take the square root of a negative number!2012-12-09

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