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For what values of k, the equation kx^(2...

For what values of k, the equation `kx^(2)-6x-2=0` has real roots?

A

`kle(-9)/(2)`

B

`kge(-9)/(2)`

C

`kle-2`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
For real roots, we must have `b^(2)-4acge0.`
`:." "(-6)^(2)-4xxkxx(-2)ge0implies36+8kge0`
`implies8kge-36implieskge(-9)/(2).`
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