Question
Mon September 07, 2009 By: Jayant Kaushik

please give a step by step solution---- step by step

Expert Reply
Tue September 08, 2009

If x = 4/3 is the root of the equation. Then f(4/3) = 0

f(x) = 6x3 - 11x2+ kx-20

f(4/3) = = 0

6(4/3)3 - 11(4/3)2+ k(4/3) -20  = 0

128/ 9 - 176/9 + 12k/9 - 180/9  = 0

⇒ k = 19

 

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