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Find the term independent of x in the expansion (3x^2-1/2x^3)^10

Find the term independent of x in the expansion (3x^2-1/2x^3)^10

Grade:11

1 Answers

Arun
25750 Points
6 years ago
Dear Student
 
Tr+1 = 10Cr (3x2)10 –r (–1/2x3)r
 for independent term of x
power of x should be zero
20 – 2r – 3r = 0
5 r = 20
r = 4
hence 
5th term will be the independent term.
 
Regards
Arun (askIITians forum expert)

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