दर्शाइए की ((1+x)/( 1-x) )^(n) =1+n ((2...

दर्शाइए की ` ((1+x)/( 1-x) )^(n) =1+n ((2x) /( 1+x)) + ( n( n+1))/( |__2) ((2x)/( 1+x)) ^(2).............`

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