Question

The discriminant of the quadratic equation $x^2-4x+a=0$ is $16-4a$.

• A. True
• B. False

Answer 1

The correct option is A True

Given: $x^2-4x+a=0$

$\Rightarrow$ Here, $a=1,b=-4,c=a$ on comparing with the standard quadratic equation.

$\Rightarrow$ $Discriminant=b^2-4ac$

$=(-4{)}^2-4(1\left)\right(a)$

$=16-4a$

$\therefore$ Discriminant $=16-4a$