Question

The discriminant of the quadratic equation,X2+4x+K=0 is​

Answer 1

Step-by-step explanation:

D=b2-4ac

( 4)(4)-4(1)(k)

D= 16-4k

Answer 2

Answer:

x2−4x+k=0 is of the form ax2+bx+c=0 where a=1b=−4c=k

Roots are equal⇒ Discriminant=0

⇒b2−4ac=0

⇒(−4)2−4×1×k=0

⇒16−4k=0

⇒−4k=−16

∴k=416=4