Auto-Math
L'opposé de \( x-y+z\) est
\(-x-y-z\)
\(z-x+y\)
\(-x+y-z\)
\(\frac{1}{x-y+z}\)
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.
\(54\)
\(9\)
\(18\)
\(486\)
Elevez au carré \(\sqrt{2}-\sqrt{3}\).
\(5-2\sqrt{6}\)
\(5-\sqrt{6}\)
\(1\)
\(-1\)
Simplifiez l'expression \(a^2(a^{-3} + a^{-2})\).
\(\frac{1}{a^6}+\frac{1}{a^4}\)
\(1+\frac{1}{a}\)
\(\frac{1}{a}\)
\(\frac{1}{a^{10}}\)
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.
\(180\)
\(60\)
\(3\)
\(30\)
Calculez \(\dfrac{4}{13}-\dfrac{3}{52}+\dfrac{35}{39}\).
\(\dfrac{34}{39}\)
\(\dfrac{22}{13}\)
\(\dfrac{179}{156}\)
impossible
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 \(\displaystyle{ \frac{\sqrt{48}\sqrt{15}\sqrt{6}}{\sqrt{10}\sqrt{20}}}\).
\(\dfrac{6\sqrt{3}}{\sqrt{5}}\)
\(\dfrac{4\sqrt{3}}{\sqrt{5}}\)
\(\dfrac{\sqrt{23}}{\sqrt{10}}\)
\(12\)
