Question

Write the discriminant of the following equation :

$x^2-4x+2=0$

Answer 1

Consider the quadratic equation $x^2-4x+2=0$ in the form $a{x}^2+bx+c$

Here, $a=1,b=-4,c=2$

Discriminant of the quadratic equation $D=b^2-4ac$

$=(-4{)}^2-8$

$=8$