1.

Find the value of `k`, so that the equation `2x^2+kx-5=0` and `x^2-3x-4=0` may have one root in common.A. `-3`B. `-1`C. `-(27)/(4)`D. `(27)/(4)`

Answer» Correct Answer - A::C
The value of `K` ………….
`x^(2)-3x-4=0`
`(x-4) (x+1) = 0`
`x = -1, 4`
when `x = -1`
`2.1 - k - 5 = 0`
`k = -3`
when `x =4`
`32+4k- 5 =0`
`k = -27//4`


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