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Calculez \(\dfrac{11}{12}-\dfrac{4}{15}\).
\(-\dfrac{7}{3}\)
\(\dfrac{13}{20}\)
\(\dfrac{7}{60}\)
\(\dfrac{2}{3}\)
Ecrivez sans valeur absolue \(|x-3|\le 1\).
\([2,4]\)
\([1,3]\)
\(]-\infty;4]\)
\([-2,2]\)
Simplifiez la fraction \(\dfrac{x^2-16}{x-4}\).
\(8\)
\(x-4\)
\(x+4\)
impossible
Ecrivez l'expression \(\dfrac{1}{a^2\sqrt[3]{a}}\) sous forme de puissance.
\(a^{3/7}\)
\(a^{-2/3}\)
\(a^{-7/3}\)
\(-a^{7/3}\)
Simplifiez l'expression \(\dfrac{28}{-84}\).
\(-56\)
\(-3\)
\(-\dfrac{1}{3}\)
Résolvez l'équation \(|2x-5|=3\).
\(1 \mbox{ et } 4\)
\(-1 \mbox{ et } -4\)
\(4\)
\(-1\)
Calculez \(\sqrt[5]{-32}\).
\(\frac{1}{2}\)
\(-\frac{1}{32^{5}}\)
\(-2\)
L'opposé de \(x+y-z\) est
\(-x-y-z\)
\(z-x-y\)
\(x+y+z\)
\(\frac{1}{x+y-z}\)
Calculez \((a^{1/5})^{-5}\).
\(\frac{1}{a}\)
\(-a\)
\(\frac{1}{a^{24/5}}\)
\(\frac{1}{a^{25}}\)
Ecrivez l'expression \(\dfrac{1}{\sqrt 3}\) sous forme de puissance.
\((\frac{1}{2})^{3}\)
\((-3)^{1/2}\)
\(-3^{1/2}\)
\(3^{-1/2}\)
