Question

Discriminant of the equation $-3x^2+2x-8=0$ is

• A. $-92$
• B. $-29$
• C. $39$
• D. $49$

Answer 1

The correct option is A $-92$

The quadratic equation is $-3x^2+2x-8=0$
Comparing it with $a{x}^2+bx+c=0$ we get, $a=-3,b=2,c=-8$
Therefore, $D=b^2-4ac$
$2^2-4\times (-3)\times (-8)$
$=4-96$
$=-92$