Question

The value of 1÷(2+√7)+1÷(√7+√10)+....+1÷(√28+√31) is?( From the chapter Arithmetic Progressions)

Answer 1

Hint ;-

Do Rationalisation of each term and then add

You answer as (2-[31]^1/2)/3

Answer 2

hey man here's your answer:

(2-[31]^1/2)/3)

hope it helps you

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