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What is the value of k, If one root of t...

What is the value of k, If one root of the quadratic equation `k x^2 - 7x + 12 =0` is 3

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Given equation is ,
`kx^2-7x+12 = 0`
As `3` is root of given equation,
`:. x = 3`, will satisfy this equation.
`:. 9k-21+12 = 0`
`=> 9k = 9`
`=> k = 1`
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