Solution:
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The given quadratic
equation is x2 – 11x + k = 0
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Since 9 is the root of
the given quadratic equation
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∴ we can put x = 9,
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∴ 92 – 11(9) + k = 0
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∴ 81 – 99 + k = 0
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∴ - 18 + k = 0
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∴ k = 18
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∴ the value of k is 18
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If one root of the quadratic equation x2 - 11x + k = 0 is 9, then find the value of k.
