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The positive value of k for which the eq...

The positive value of `k` for which the equation `x^2+k x+64=0` and `x^2-8x+k=0` will both have real roots, is 4 (b) 8 (c) 12 (d) 16

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Given quadratic equation `x^2+kx+64=0` and `x^2-8x+k=0`
Find the value of `a`
Here, `x^2+kx+64=0`..(1)
`x^2-8x+k=0`..(2)
...
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