Question

ex 1 si 2
dau coroana.............​

Answer 1

$\it b_1q=6\ \ \ \ \ \ (1)\\ \\ b_1q^3=24\ \ \ \ (2)\\ \\ (11),\ (2) \Rightarrow q=2\\ \\ b_1=\dfrac{b_2}{q}=\dfrac{6}{2}=3$