Auto-Math
Ecrivez sans valeur absolue \(|x-1|>2\).
\(]-1,3[\)
\(]3;+\infty[\)
\(]-1;+\infty[\)
\(]-\infty;-1[\, \cup\, ]3;+\infty[\)
Calculez le P.G.C.D. de 12 et 15.
\(180\)
\(60\)
\(3\)
\(30\)
L'opposé de \(x-y-z\) est
\(y+z-x\)
\(-x-y-z\)
\(x+y+z\)
\(\frac{1}{x-y-z}\)
Ecrivez sans valeur absolue \(|x|<2\).
\([0,2[\)
\(]-2,2[\)
\(]-\infty;2[\)
\(-2\mbox{ et }2\)
Simplifiez l'expression \(\dfrac{21}{35}\).
\(\dfrac{3}{5}\)
\(\dfrac{7}{5}\)
impossible
\(\dfrac{5}{3}\)
Calculez \(25^{0.5}\).
\(5\)
\(\pm 5\)
\(\sqrt[5]{2}\sqrt[3]{a^2}\)
\(\frac{1}{25^{2}}\)
Calculez \(9^{-1/2}\).
\(\dfrac{1}{81}\)
\(\pm\dfrac{1}{3}\)
\(-3\)
\(\dfrac{1}{3}\)
Calculez \(\dfrac{5}{2}-\left( \dfrac{1}{3}+1\right)\).
\(\dfrac{7}{6}\)
\(-\dfrac{3}{2}\)
\(\dfrac{19}{6}\)
\(\dfrac{14}{6}\)
Ecrivez sans le symbole de valeur absolue l'expression \(|5-23|\).
\(-18\)
\(18\)
\(23\)
Calculez \(\dfrac{4}{13}-\dfrac{3}{52}+\dfrac{35}{39}\).
\(\dfrac{34}{39}\)
\(\dfrac{22}{13}\)
\(\dfrac{179}{156}\)
