Question

Calcule a 20 termo da PA 26,31,36,41

Answer 1

$> resolucao \\ \\ \geqslant progressao \: aritmetica \\ \\ r = a2 - a1 \\ r = 31 - 26 \\ r = 5 \\ \\ \\ \geqslant o \: 20 \: termo \: da \: pa \\ \\ an = a1 + (n - 1)r \\ an = 26 + (20 - 1)5 \\ an = 26 + 19 \times 5 \\ an = 26 + 95 \\ an = 121 \\ \\ > > < > < > < >$