Question

b4=54 b8=4374 нужно НАЙТИ B1 И q!!! 15 БАЛЛОВ​

Answer 1

$\left \{ {{b_{8}=4374 } \atop {b_{4}=54 }} \right.\\\\:\left \{ {{b_{1}*q^{7}=4374} \atop {b_{1}*q^{3}=54}} \right.\\------\\q^{4}=81\\\\q^{2}=9\\\\1)\left \{ {{q=-3} \atop {b_{1}=54:(-3)^{3}  }} \right.\\\\\left \{ {{q=-3} \atop {b_{1} =-2}} \right.\\\\2)\left \{ {{q=3} \atop {b_{1}=54:3^{3}}} \right.\\\\\left \{ {{q=3} \atop {b_{1}=2 }} \right.$