Question

Encontre o nono termo da P.G ( 3, -6 , -12 ....)

Answer 1

Explicação passo-a-passo:

• $\sf q=\dfrac{-6}{3}$

$\sf q=-2$

• $\sf a_n=a_1\cdot q^{n-1}$

$\sf a_9=a_1\cdot q^8$

$\sf a_9=3\cdot2^8$

$\sf a_9=3\cdot256$

$\sf a_9=768$