If `n in N` and if `(1 + 4x + 4x^2)^n =sum_(r=0)^(2a) a_rx^r`, where `a_0,a_1,a_2,.....,a_(2n)` are real numbers. The value of `2sum_(r=0)^n a_(2r)`, is

If n in N and if (1+4x+4x^(2))^(n)=sum_(r=0)^(2a)a_(r)x^(r) where a_(0),a_(1),a_(2),......,a_(2n) are real numbers. The value of 2sum_(r=0)^(n)a_(2r), 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 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

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

Consider (1 + x + x^(2))^(n) = sum_(r=0)^(n) a_(r) x^(r) , where a_(0), a_(1), a_(2),…, a_(2n) are real number and n is positive integer. The value of sum_(r=0)^(n-1) a_(r) is

Consider (1 + x + x^(2))^(n) = sum_(r=0)^(n) a_(r) x^(r) , where a_(0), a_(1), a_(2),…, a_(2n) are real number and n is positive integer. The value of sum_(r=0)^(n-1) a_(r) is

Consider (1 + x + x^(2))^(n) = sum_(r=0)^(n) a_(r) x^(r) , where a_(0), a_(1), a_(2),…, a_(2n) are real number and n is positive integer. The value of sum_(r=0)^(n-1) a_(r) is

Consider (1+x+x^(2)) ^(n) = sum _(r=0)^(2n) a_(r) x^(r) , "where " a_(0),a_(1), a_(2),…a_(2n) are real numbers and n is a positive integer. The value of a_(2) is