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Calculez le P.P.C.M. de 12 et 15.
\(3\)
\(60\)
\(180\)
impossible
Résolvez l'inéquation \(|x-4|<1\).
\(]3;+\infty[\)
\(]-\infty;5[\)
\(]3,5[\)
\(3\mbox{ et }5\)
Résolvez l'inéquation \(|x+5|\geq 2\).
\([-3;+\infty[\)
\([-7,-3]\)
\([-7,7]\)
\(]-\infty;-7]\cup [-3;+\infty[\)
Simplifiez l'expression \(a^2(a^{-3} + a^{-2})\).
\(\frac{1}{a^6}+\frac{1}{a^4}\)
\(1+\frac{1}{a}\)
\(\frac{1}{a}\)
\(\frac{1}{a^{10}}\)
Calculez \((a^{2/3})^{3/4}\).
\(a^{17/12}\)
\(\sqrt{a}\)
\(a^{8/9}\)
\(\frac{1}{a^2}\)
Calculez \(\dfrac{11}{12}-\dfrac{4}{15}\).
\(-\dfrac{7}{3}\)
\(\dfrac{13}{20}\)
\(\dfrac{7}{60}\)
\(\dfrac{2}{3}\)
Calculez \((\sqrt{2}-\sqrt{3})\sqrt{6}\).
\(3\sqrt{2}-2\sqrt{3}\)
\(2\sqrt{3}-3\sqrt{2}\)
\(-\sqrt{6}\)
\(2\sqrt{2}-3\)
Résolvez l'inéquation \(|x|<3\).
\(]-3,3[\)
\([0,3[\)
\(]0,3[\)
\(0,\, 1\mbox{ et }2\)
Calculez \(3\sqrt{6}+2\sqrt{12}-\sqrt{24}+\sqrt{27}\).
\(5\sqrt{6}+7\sqrt{3}\)
\(8\sqrt{6}\)
\(5\sqrt{21}\)
\(\sqrt{6}+7\sqrt{3}\)
Résolvez l'inéquation \(|3x+2|\geq 4\).
\([\frac{2}{3};+\infty[\)
\(]-\infty;\frac{2}{3}]\cup[-2;+\infty[\)
\(]-\infty;-2]\cup[\frac{2}{3};+\infty[\)
\([-2,\frac{2}{3}]\)
