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If `-5` is a root of the quadratic equation `2x^2+p x-15=0` and the quadratic equation `p(x^2+x)+k=0` has equal roots, find the value of `kdot`

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If -5 is a root of the quadratic equation 2x^(2)+px-15=0 and the quadratic equation p(x^(2)+x)+k=0 has equal roots, find the value of k.

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