If the equation 1 / X-2 + K / x + 2 = 3 / x-4 about X has no solution, find the value of K

If the equation 1 / X-2 + K / x + 2 = 3 / x-4 about X has no solution, find the value of K

1/(x-2)+k/(x+2)=3/(x-4)
On the left, you can get the following results:
(x+2)/(x^2-4)+k(x-2)/(x^2-4)=3/(x-4)
(kx+x+2-2k)/(x^2-4)=3/(x-4)
If we reduce it to an integral, we can get the following results
(x-4)[(k+1)x+2-2k]=3x^2-12
(k-2)x^2-2(1+3k)x+8k+4=0
According to the discriminant less than 0, we can get: 1
4(1+3k)^2-4*4*(k-2)(2k+1)