Question

помогитн подал в влсиволвь

Answer 1

$\left \{ {{-7=q+qw+qw^2} \atop {14=q^2w+q^2w^2+q^2w^3}} \atop {-a=q^3w^3}}\right. \left \{ {{qw=-2} \atop {q-2w=-5}} \atop {a=2q^2}} \right. \left \{ {{q^2+5q+4=0} \atop {a=2q^2}} \right. \\ a=32---or---a=2$