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CBSE Class 11-science Answered

Please teach me the method to solve it:
Asked by nitishkrnehu09 | 01 Jan, 2018, 04:02: AM
answered-by-expert Expert Answer
Total number of terms in each is n+1
begin mathsize 16px style expanding space summation
1 plus straight x squared plus straight x cubed plus...... plus straight x to the power of straight n plus 1 plus 1 over straight x plus 1 over straight x squared plus........ plus 1 over straight x to the power of straight n
both space are space in space GP space
find space sum space of space GP
And space use
open parentheses straight x to the power of straight n minus 1 close parentheses equals open parentheses straight x minus 1 close parentheses open parentheses straight x to the power of straight n minus 1 end exponent plus straight x to the power of straight n minus 2 end exponent plus........ plus straight x plus 1 close parentheses end style
Answered by Arun | 04 Jan, 2018, 05:01: PM
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