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

Asked by jayantkaushik | 7th Sep, 2009, 08:05: PM

Expert Answer:

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

 

Answered by  | 8th Sep, 2009, 09:17: AM

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