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Elevez au carré \(2+\sqrt{3}\).
\(7\)
\(12\)
\(7+2\sqrt{3}\)
\(7+4\sqrt{3}\)
Calculez \(\sqrt[3]{-125}\).
\(\frac{1}{5}\)
impossible
\(-\frac{1}{125^{3}}\)
\(-5\)
Simplifiez l'expression \(\dfrac{98}{-49}\).
\(-\dfrac{1}{2}\)
\(49\)
\(-2\)
Calculez le P.P.C.M. de 18 et 27.
\(54\)
\(9\)
\(18\)
\(486\)
Calculez \(3\sqrt{6}+2\sqrt{12}-\sqrt{24}+\sqrt{27}\).
\(5\sqrt{6}+7\sqrt{3}\)
\(8\sqrt{6}\)
\(5\sqrt{21}\)
\(\sqrt{6}+7\sqrt{3}\)
Calculez \(\dfrac{11}{12}-\dfrac{4}{15}\).
\(-\dfrac{7}{3}\)
\(\dfrac{13}{20}\)
\(\dfrac{7}{60}\)
\(\dfrac{2}{3}\)
Donnez une expression plus simple de -(x+y)-(2-x)-(3-y).
\(5\)
\(-5-2x\)
\(-5-2y\)
Résolvez l'inéquation \(|3x+2|\geq 4\).
\([\frac{2}{3};+\infty[\)
\(]-\infty;\frac{2}{3}]\cup[-2;+\infty[\)
\(]-\infty;-2]\cup[\frac{2}{3};+\infty[\)
\([-2,\frac{2}{3}]\)
Résolvez l'inéquation \(|x-5|<2\).
\([3,7]\)
\(]-\infty;7[\)
\(]-\infty;-3[\)
\(]3,7[\)
L'opposé de \( x-y+z\) est
\(-x-y-z\)
\(z-x+y\)
\(-x+y-z\)
\(\frac{1}{x-y+z}\)
