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प्रश्न
If one of the roots of the quadratic equation x2 - 11x + k = 0 is 9, then find the value of k
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उत्तर
x2 - 11x + k = 0
Given that
One root of given equation is 9
∴ `(9)^2 - 11(9) + k = 0`
∴ 81 - 99 + k = 0
∴ k = 18
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