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Ecrivez avec des valeurs absolues l'intervalle \([\,-2,6\,]\).
\(\vert x-2\vert\leq 6\)
\(\vert x\vert\leq 6\)
\(\vert x-2\vert\leq 4\)
\(\vert x\vert\leq 4\)
Calculez le P.G.C.D. de 12 et 15.
\(180\)
\(60\)
\(3\)
\(30\)
Simplifiez la fraction \( \dfrac{2a^2-2b^2}{3b+3a} \).
\(\dfrac{1}{3}(a-b)\)
\(\dfrac{2}{3}(a-b)\)
impossible
Calculez le P.G.C.D. de 18 et 27.
\(54\)
\(9 \)
\(18\)
Simplifiez l'expression \(\dfrac{a^3b}{a^4b^2}\).
\(ab^2\)
\(ab\)
\(\dfrac{1}{ab}\)
Calculez \(\dfrac{3\sqrt{2}+\sqrt{3}}{\sqrt{6}}\).
\(\dfrac{8\sqrt{3}+\sqrt{6}}{6}\)
\(\dfrac{\sqrt{8}}{2}+\dfrac{1}{2}\)
\(\sqrt{3}+\dfrac{\sqrt{2}}{2}\)
\(2\sqrt{2}\)
Calculez \(\dfrac{21}{27}-\dfrac{4}{18}\).
\(\dfrac{17}{54}\)
\(\dfrac{17}{9}\)
\(\dfrac{5}{9}\)
\(\dfrac{8}{27}\)
Simplifiez l'expression \(\dfrac{21}{35}\).
\(\dfrac{3}{5}\)
\(\dfrac{7}{5}\)
\(\dfrac{5}{3}\)
L'opposé du carré de 0,6 est
\(-0,36\)
\(0,36\)
\(-3,6\)
\(-1,2\)
Ecrivez sans le symbole de valeur absolue l'expression \(|x-2|\) si \(x<2\).
\(2\)
\(x-2\)
\(2-x\)
