Question

find the value of k for each of the following qudratic equation ,so that they have equal roots 1} x²+k(2x+k-1)=o​

Answer 1

Answer:

b^2= 4ac , if it have bottj roots equal

Answer 2

for equal roots D should be equal to 0

D=b^2-4ac=0

equation is: x^2+2xk+k^2-k=0

so, b^2-4ac=0
4k^2-4(k^2-k)=0
4k^2-4k^2+4k=0
4k=0
k=0