1.

The sum to n terms of the series 1(1+x)(1+3x)+1(1+3x)(1+5x)+1(1+5x)(1+7x)+……, where n>5,x≥2 is

Answer»

The sum to n terms of the series 1(1+x)(1+3x)+1(1+3x)(1+5x)+1(1+5x)(1+7x)+, where n>5,x2 is



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