20? 20. If the coefficient of 4th term in the expansion of x + α 2 x n i s 20 . t h e n t h e r e s p e c t i v e v a l u e s o f α a n d n a r e a) 2,7 b) 5,8 c) 3,6 d) 2,6 20 ? Share with your friends Share 2 Aarushi Mishra answered this General term of the given expansionTr+1=Crn xn-r α2xrT4=C3n xn-3 α2x3Given: T4=C3n xn-3 α2x3=20C3n xn-6 α38=20 x0Comparing both sidesPower of x on both sides must be same n-6=0n=6Put n=6C36 x6-6 α38=20 x06×5×43×2×1 α38=20α38=1α3=8α=2 Please check your options they seem wrong 2 View Full Answer