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Simplifiez l'expression \(\dfrac{28}{-84}\).
\(-56\)
\(-3\)
\(-\dfrac{1}{3}\)
impossible
Ecrivez sans le symbole de valeur absolue l'expression \(|1-2x^2|\) si \(x>\frac{\sqrt{2}}{2}\).
\(\frac{\sqrt{2}}{2}\)
\(1-2x^2\)
\(2x^2-1\)
Elevez au carré \(\sqrt{2}-\sqrt{3}\).
\(5-2\sqrt{6}\)
\(5-\sqrt{6}\)
\(1\)
\(-1\)
Calculez \(36^{5/2}\).
\(\pm 36^{5}\)
\(\frac{1}{\sqrt[5]{36^{2}}}\)
\(6^5\)
Simplifiez la fraction \(\dfrac{5x-5a}{3a-3x}\).
\(\dfrac{0}{0}\)
\(\dfrac{5}{3}\)
\(-\dfrac{5}{3}\)
Calculez \(\dfrac{7}{12}+\dfrac{5}{18}\).
\(\dfrac{1}{3}\)
\(\dfrac{31}{36}\)
\(\dfrac{2}{5}\)
Simplifiez l'expression \(\dfrac{98}{-49}\).
\(-\dfrac{1}{2}\)
\(49\)
\(-2\)
Calculez le P.P.C.M. de 12 et 15.
\(3\)
\(60\)
\(180\)
Résolvez l'inéquation \(|x-5|<2\).
\([3,7]\)
\(]-\infty;7[\)
\(]-\infty;-3[\)
\(]3,7[\)
Résolvez l'équation \(|2x-5|=3\).
\(1 \mbox{ et } 4\)
\(-1 \mbox{ et } -4\)
\(4\)
