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If (2x-1)^(8)=a(8)x^(8)+a(7)x^(7)+a(6)x^...

If `(2x-1)^(8)=a_(8)x^(8)+a_(7)x^(7)+a_(6)x^(6)+..........+a_(1)x+a_(0)`, then find the value of `a_(0)+a_(1)+a_(2)+.........+a_(7)+a_(8)`.

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