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Calculez \(\dfrac{21}{27}-\dfrac{4}{18}\).
\(\dfrac{17}{54}\)
\(\dfrac{17}{9}\)
\(\dfrac{5}{9}\)
\(\dfrac{8}{27}\)
Calculez \(\displaystyle{ \frac{\sqrt{48}\sqrt{15}\sqrt{6}}{\sqrt{10}\sqrt{20}}}\).
\(\dfrac{6\sqrt{3}}{\sqrt{5}}\)
\(\dfrac{4\sqrt{3}}{\sqrt{5}}\)
\(\dfrac{\sqrt{23}}{\sqrt{10}}\)
\(12\)
Résolvez l'inéquation \(|x-4|<1\).
\(]3;+\infty[\)
\(]-\infty;5[\)
\(]3,5[\)
\(3\mbox{ et }5\)
Simplifiez l'expression \(\dfrac{98}{-49}\).
impossible
\(-\dfrac{1}{2}\)
\(49\)
\(-2\)
Calculez \((1+\sqrt{3})(\sqrt{2}+1)\).
\(1+\sqrt{11}\)
\(2+\sqrt{6}\)
\(\sqrt{2}+1+\sqrt{6}+\sqrt{3}\)
\(\sqrt{2}+1+\sqrt{5}+\sqrt{3}\)
Simplifiez l'expression \(a^2(a^{-3} + a^{-2})\).
\(\frac{1}{a^6}+\frac{1}{a^4}\)
\(1+\frac{1}{a}\)
\(\frac{1}{a}\)
\(\frac{1}{a^{10}}\)
Calculez \(\dfrac{4}{13}-\dfrac{3}{52}+\dfrac{35}{39}\).
\(\dfrac{34}{39}\)
\(\dfrac{22}{13}\)
\(\dfrac{179}{156}\)
Le carré de l'opposé de 0,6 est
\(0,12\)
\(3,6\)
\(-0,36\)
\(0,36\)
Ecrivez sans valeur absolue \(|x|<2\).
\([0,2[\)
\(]-2,2[\)
\(]-\infty;2[\)
\(-2\mbox{ et }2\)
Ecrivez sans le symbole de valeur absolue l'expression \(|x-2|\) si \(x<2\).
\(2\)
\(x-2\)
\(2-x\)
