what is the solution of this question?please explain step by step.

Asked by Vidushee Geetam | 27th May, 2013, 02:05: PM

Expert Answer:

(3x-1)?=a?x? +a?x? + a?x?…. +a?x +a?
Since this equation will be valid for all values of x, hence
Susbtituing x = 1
(3(1) - 1)^7 = a?(1)? +a?(1)? + a?(1)?…. +a?(1) +a?
2^7 = a?+ a?+ a? +…. +a? + +a?
128 = a?+ a?+ a? +…. +a? + +a?

Answered by  | 28th May, 2013, 02:02: AM

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