Bases mathématiques

a) $x\in\left\{-\frac{9}{4},1\right\}$

b) $x\in\left\{0,7\right\}$

c) $x\in\left\{\frac{-5-\sqrt{61}}{6},\frac{-5+\sqrt{61}}{6}\right\}$

d) $x\in\left\{\frac{-5}{3},1\right\}$

e) $\begin{align*} &\frac{\left(11x-4\right)}{x\left(3x-1\right)}=0\\ &x\in\left\{1,\frac{11}{4}\right\} \end{align*}$

Exercices de vérification