Given`(1+x^2)^2 (1+x)^n` = `sum a_r x^r`. If `a_0,a_1 and a_2` are in A.P. then value of n can be:

Let (1 + x^2)^2 (1 + x)^n = A_0 +A_1 x+A_2 x^2 + ...... If A_0, A_1, A_2, are in A.P. then the value of n is

Let (1 + x^2)^2 (1 + x)^n = A_0 +A_1 x+A_2 x^2 + ...... If A_0, A_1, A_2, are in A.P. then the value of n is

Let (1 + x^2)^2 (1 + x)^n = A_0 +A_1 x+A_2 x^2 + ...... If A_0, A_1, A_2, are in A.P. then the value of n is

Let (1+x^2)^2(1+x)^n=A_0+A_1x+A_2x^2+…."if" A_0A_1A_2 are in A.P then the value of n is

Let (1+x^2)^2(1+x)^n=A_0+A_1x+A_2x^2+…."if" A_0A_1A_2 are in A.P then the value of n is

Let (1+x^2)^2 (1+x)^n= A_0 +A_1 x+A_2 x^2 + ...... If A_0, A_1, A_2,........ are in A.P. then the value of n is

If cosx=a_0+a_1 x+a_2x^2+... then the value of a_2 is

"If" n in "and if "(1+ 4x +4 x^2)^n=Sigma_(r=0)^(2n) a_rx^r, "where" a_0,a_1,a_2,.....a_(2n) "are real number" , The value of a_(2n-1) is

"If" n in "and if "(1+ 4x +4 x^2)^n=Sigma_(r=0)^(2n) a_rx^r, "where" a_0,a_1,a_2,.....a_(2n) "are real number" The value of the 2 underset(r=1) overset (n) Sigma_(2r-1) is