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If the sum of the zeroes of the quadratic polynomial 3x^2 – kx + 6 is 3, find the value of k.

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If the sum of the zeroes of the quadratic polynomial 3x2 – kx + 6 is 3, find the value of k.

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Let zeros of equation be l and m

now,

l+m=3

-b/a=3

-(-k)/3=3

k=9

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