Question

hy please tell the answer it is very urgent

Answer 1

(1+2n)(1+2n)

(1+2n)²

1²+2n²+2*2n

1²+2n²+4n.

this is your answer.

Answer 2

HERE IS YOUR ANSWER....

(1+2n)(1+2n)

=(a+b)(a+b)=(a+b)^2. [(a+b)^2=a^2+b^2+2ab]

=1^2+(2n)^2+2(1)(2n)

=1+4n^2+4n

HOPE IT HELPS YOU..