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What is the co-efficient of x8 in the expression (x-1)(x-2).....(x-10)?
co-efficient of x^10 will be 1co-efficient of x^9 will be sum of rootsco-efficient of x^8 will be sum of roots taken 2 at a timehence ans= 1.2 +2.3+3.4 +...........+ 9.10Now you can find this summation by using concepts of Seq and series
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