Q15Multiple choice
In the expansion of (x + a)n if the sum of odd terms is denoted by O and the sum of even term by E. Then prove that
- (i)O2 – E2 = (x2 – a2)n
- (ii)4OE = (x + a)2n – (x – a)2n 2n 2 1
In the expansion of (x + a)n if the sum of odd terms is denoted by O and the sum of even term by E. Then prove that