Question

For the expression $2x^2–7x-5$, the roots are α and β, then the value of α+β is

• A. $3.5$
• B. $2.5$
• C. $1.5$
• D. $4.5$

Answer 1

The correct option is A $3.5$

In the given equation $a=2,b=-7$ and $c=-5$
$\alpha +\beta =-\frac{b}{a}$
$=-\frac{(-7)}{2}=3.5$