If one zero of the quadratic polynomial kx2 + 3x + k is 2 then the value of k is ______.

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If one zero of the quadratic polynomial kx2 + 3x + k is 2 then the value of k is underlinebb((-6)/5). Explanation: x = 2 satisfies kx2 + 3x + k = 0. ∴ 4k + 6 + k = 0 ⇒ 5k = –6 ⇒ k = (-6)/5

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