Question

if the equation x^2+4x+k=0has real and equal root​

Answer 1

Answer:

a= 1 , b= 4 , c= k

we have real and equal roots

so b²-4ac = 0

put the value

(4)²-4×1×k=0

16-4k= 0

16= 4k

16/4 = k

4 = k

hope it will help you