Question

n la puterea a doua ori (n+1)la a doua

Answer 1

n^2 (n+1)^2 = n^2 * ( n^2  + 2n + 1) = n^4 + 2n^3 + n^2

Answer 2

$n ^{2} \times (n + 1)^{2}$
$n ^{2} \times ( {n}^{2} + 2n + 1)$
[tex]n ^{4} + 2n^{3} + n^2