Values of j for which the equation 9x2+2kx-1= 0 has real roots
Answers
Answered by
0
b^2-4ac>0
here
(2k)^2-4×9×(-1)>0
4k^2>-36
k^2>-9
k>-3
here
(2k)^2-4×9×(-1)>0
4k^2>-36
k^2>-9
k>-3
Similar questions