Question

the rth term in the expansion of (1+x)²​

Answer 1

Step-by-step explanation:

the formula for (r+1) th term from begening is given by

T ( r+1) = nCr (x) ^(n-r)

C is combination

n is total nber of terms ( since n= 2 you calculate)

r is any term from begning

so rth term from begining

T[(r-1) +1] = nC (r-1) x^(n-r+1)

as 1 raised to any power except infinity is 1 only

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