Question

what is the sum of the roots of the quadratic equation x²+2x-5=0​

Answer 1

Answer:

-2

Step-by-step explanation:

$\alpha + \beta = - \frac{b}{a} \\ = - \frac{2}{1} \\ = - 2$

Answer 2

Answer:

-2

Step-by-step explanation:

Let the roots of the quadratic equation be

$\alpha \: and \: \beta$

comparing the equation in

${ax}^{2} + bx + c = 0$

a=1

b=2

c=(-5)

$\alpha + \beta = \frac{ - b}{a}$

$= \frac{ - 2}{1 }$

$= - 2$