The binomial expansion (7+3x)^{-2/5} is valid for all x in the interval ({-7/3,7/3) and if the 4th term of its expansion is kx^3, then (7^{{12}/5}k)=

TS EAMCET 14-Sep-2020 Shift 1 Solved Paper

Section: Mathematics

Question : 18 of 160

Marks: +1, -0

The binomial expansion (7+3x)−

is valid for all x in the interval (−

) and if the 4th term of its expansion is kx3, then (7

k)=

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