Question

for what value of K the quadratic equation
$kx {}^{2} - k + 1$
has equal roots​

Answer 1

Kx²-k+1 has equal roots

so ,it mean D=0

a=k,b=-k,c=1

b²-4ac=0

k²-4*k*1=0

k²-4k=0

k²=4k

k=4....Ans

Hope this helps to you!!!!!!!

Answer 2

A =k, B = - k and C=1
B square - 4ac=0
K square - 4*K*1=0
K square - 4K=0
You must have readed a property from junior classes that - =+
Thence,
K square =4K
K square means that there is K*K
So, as properties
/ = *
K square / K=4
K=4