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

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

Grade:11

1 Answers

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

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