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Calculez \(\dfrac{5}{30}-\dfrac{2}{45}+\dfrac{11}{75}\).
\(\dfrac{121}{450}\)
\(\dfrac{7}{30}\)
\(\dfrac{7}{225}\)
\(\dfrac{29}{75}\)
Ecrivez l'expression \(\dfrac{1}{a^2\sqrt[3]{a}}\) sous forme de puissance.
\(a^{3/7}\)
\(a^{-2/3}\)
\(a^{-7/3}\)
\(-a^{7/3}\)
Calculez \(3\sqrt{6}+2\sqrt{12}-\sqrt{24}+\sqrt{27}\).
\(5\sqrt{6}+7\sqrt{3}\)
\(8\sqrt{6}\)
\(5\sqrt{21}\)
\(\sqrt{6}+7\sqrt{3}\)
Elevez au carré \(2+\sqrt{3}\).
\(7\)
\(12\)
\(7+2\sqrt{3}\)
\(7+4\sqrt{3}\)
Ecrivez sans valeur absolue \(|x-3|\le 1\).
\([2,4]\)
\([1,3]\)
\(]-\infty;4]\)
\([-2,2]\)
Calculez \(\sqrt[3]{-125}\).
\(\frac{1}{5}\)
impossible
\(-\frac{1}{125^{3}}\)
\(-5\)
Ecrivez sans le symbole de valeur absolue l'expression \(|x+1|\) si \(x<-1\).
\(-x-1\)
\(x+1\)
\(x-1\)
\(-1\)
Résolvez l'inéquation \(|3x+2|\geq 4\).
\([\frac{2}{3};+\infty[\)
\(]-\infty;\frac{2}{3}]\cup[-2;+\infty[\)
\(]-\infty;-2]\cup[\frac{2}{3};+\infty[\)
\([-2,\frac{2}{3}]\)
Ecrivez sans le symbole de valeur absolue l'expression \(|1-2x^2|\) si \(x>\frac{\sqrt{2}}{2}\).
\(\frac{\sqrt{2}}{2}\)
\(1-2x^2\)
\(2x^2-1\)
Calculez \(\dfrac{4}{13}-\dfrac{3}{52}+\dfrac{35}{39}\).
\(\dfrac{34}{39}\)
\(\dfrac{22}{13}\)
\(\dfrac{179}{156}\)
