If α and β are the roots of the quadratic equation x^2+kx-15=0 such that \alpha-\beta=8, then what is the positive value of k?

UPSC CDS 1 2020 Math Paper

Question : 12 of 100

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If α and β are the roots of the quadratic equation x2+kx−15=0 such that α−β=8, then what is the positive value of k?

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