Question

the value of k for which the equation x²+2 (k+1) x + k²=0 has equal roots is
1
‐1
‐1/2
none of these​

Answer 1

Answer:

B is the answer!!!

Step-by-step explanation:

let x and y are two roots of that equation

the value of k for which the equation x²+2 (k+1) x + k²=0 has equal roots is,it means

x+y=-b/a=-2(k+1)/1=-2(k+1)

xy=k^2/1=k^2

Accordind to question

xy=x+y

k^2=-2(k+1)

k^2+2k+1=0

k^2+k+k+1=0

k(k+1)+1(k+1)=0

k=-1

thaank you!!