If a0,a1,a2,……an be the successive coeff...

If `a_0,a_1,a_2,……a_n` be the successive coefficients in the expnsion of `(1+x)^n` show that `(a_0-a_2+a_4……..)^2+(a_1-a_3+a_5………)^2=a_0+a_1+a_2+………..+a_n=2^n`

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