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Grade: 10
        
What is the co-efficient of x8 in the expression (x-1)(x-2).....(x-10)?
one year ago

Answers : (1)

Nishant Vora
IIT Patna
askIITians Faculty
2468 Points
							co-efficient of x^10 will be 1
co-efficient of x^9 will be sum of roots
co-efficient of x^8 will be sum of roots taken 2 at a time

hence ans= 1.2 +2.3+3.4 +...........+ 9.10

Now you can find this summation by using concepts of Seq and series


one year ago
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