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Ecrivez sans valeur absolue \(|x-1|>2\).
\(]-1,3[\)
\(]3;+\infty[\)
\(]-1;+\infty[\)
\(]-\infty;-1[\, \cup\, ]3;+\infty[\)
Simplifiez l'expression \(\dfrac{28}{-84}\).
\(-56\)
\(-3\)
\(-\dfrac{1}{3}\)
impossible
Simplifiez l'expression \(\left( \dfrac{a^{-3}b^{-2}c^{-2}}{a^2b^3c^2}\right)^2\).
\(\dfrac{1}{a^{10}b^{10}c^{8}}\)
\(\dfrac{b^2}{a^2}\)
\(a^{25}b^{25}c^{16}\)
\(ab\)
Calculez \(\sqrt{12}+\sqrt{8}-2\sqrt{2}+3\sqrt{3}\).
\(3\sqrt{2}+3\sqrt{3}\)
\(5\sqrt{6}\)
\(5\sqrt{3}\)
\(3\sqrt{5}\)
Résolvez l'inéquation \(|3x+2|\geq 4\).
\([\frac{2}{3};+\infty[\)
\(]-\infty;\frac{2}{3}]\cup[-2;+\infty[\)
\(]-\infty;-2]\cup[\frac{2}{3};+\infty[\)
\([-2,\frac{2}{3}]\)
Calculez le P.P.C.M. de 18 et 27.
\(54\)
\(9\)
\(18\)
\(486\)
Calculez le P.G.C.D. de 18 et 27.
\(9 \)
\(3\)
Simplifiez l'expression \(\dfrac{98}{-49}\).
\(-\dfrac{1}{2}\)
\(49\)
\(-2\)
Simplifiez l'expression \(\dfrac{21}{35}\).
\(\dfrac{3}{5}\)
\(\dfrac{7}{5}\)
\(\dfrac{5}{3}\)
Calculez \(10^4 \cdot 10^{-2}\).
0,00000001
10000
0,01
100
