Question

plz solve it if the equation has equal roots que no. 14

Answer 1

Hey

Here is your answer,

The equation is ,x^2 -2kx +7k -12=0
A=1
B=-2k
C=7k-12

b^2 -4ac=0
(-2k)^2 - 4x1x(7k-12)=0
4k^2 -28k +48=0

Now a quadratic equation is obtained.
Let's solve to find the value of k.
Divide the complete equation by 4.
k^2 -7k +12=0
k^2 -4k-3k+12=0
k(k-4)-3(k-4)=0
(K-4)(k-3)=0
K=4
K=3

Hope it helps you!