Question

(5/b,x,5.b...)
Como resolvermos isso.?

Answer 1

$\frac{a_{2}}{a_{1}}=\frac{a_{3}}{a_{2}}$

${(a_{2})}^{2}=a_{3}. a_{1}$

${x}^{2}=\frac{5}{\cancel{b}}.5\cancel{b}$

${x}^{2}=25$

$x=\sqrt{25}$

$\boxed{\boxed{x=5}}$