Question

os 5 primeiros termos an=n² +2 ​

Answer 1

Vamos lá.

an = n² + 2 ​

a1 = 1 + 2 = 3

a2 = 4 + 2 = 6

a3 = 9 + 2 = 11

a4 = 16 + 2 = 18

a5 = 25 + 2 = 27

Answer 2

$\geqslant \: resolucao \\ \\ an = n {}^{2} + 2 \\ a1 = 1 {}^{2} + 2 = 1 + 2 = 3 \\ a2 = 2 {}^{2} + 2 = 4 + 2 = 6 \\ a3 = 3 {}^{2} + 2 = 9 + 2 = 11 \\ a4 = 4 {}^{2} + 2 = 16 + 2 = 18 \\ a5 = 5 {}^{2} + 2 = 25 + 2 = 27 \\ \\ ( \: 3 \: . \: 6 \: . \: 11 \: . \: 18 \: . \: 27 \: .... \: ) \\ \\ \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant$