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Quadratic Equations

What will be ...

Question

What will be the sum of roots of quadratic equation $2 x^{2} + 4 x + 6 = 0$ ?

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Solution

Given equation: $2 x^{2} + 4 x + 6 = 0$
Comparing with equation $a x^{2} + b x + c = 0$ .
We get $a = 2, b = 4, c = 6$
Sum of roots $= - \frac{b}{a} = - \frac{4}{2} = - 2$

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