Question

Determine o oito termo da pg(-2,4,...)

Answer 1

$> \: resolucao \\ \\ \geqslant \: progressao \: \: geometrica \\ \\ q = \frac{a2}{a1} = \frac{4}{ - 2} = - 2 \\ \\ = = = = = = = = = = = = = = = = \\ \\ > \: o \: oitavo \: termo \: da \: pg \\ \\ an = a1 \times q {}^{n - 1} \\ an = - 2 \times ( - 2) {}^{8 - 1} \\ an = - 2 \times ( - 2) {}^{7} \\ an = - 2 \times ( - 128) \\ an = 256 \\ \\ \\ \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant$