Question

14. If the equation (k-2)x²-(k-4)x-2 = 0 has difference of roots as 3 then the value of k​

Answer 1

Answer:

Step-by-step explanation:

For equal roots, b  

2

−4ac=0

Here, a=1,b=2(k+1),c=9

∴[2(k+1)]  

2

−4×1×9=0

or 4(k+1)  

2

=4×9

or (k+1)  

2

=9 or k+1=±3 or k=+2,−4