If 3 is a solution of 3 x2-k-1 x-9-0- then k- -

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Quadratic Polynomial

if 3 is a sol...

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if 3 is a solution of 3x²+(k-1)x+9=0, then k=?

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3 x^{2} + (k - 1) x + 9 = 0,

Find $k$ , If $3$ is a solution of $3 x^{2} + (k - 3) x + 0 = 0$

x = \frac{- 1}{2}

{3 x}^{2} + 2 k x - 3 = 0

(k - 1) x + (3 k + 1) y + 2 k z = 0 (k - 1) x + (4 k - 2) y + (k + 3) z = 0 2 x + (3 k + 1) y + 3 (k - 1) z = 0

k = 0, 3

x = - \frac{1}{2}

3 x^{2} + 2 k x - 3 = 0

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