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Calculez \(\dfrac{5}{30}-\dfrac{2}{45}+\dfrac{11}{75}\).
\(\dfrac{121}{450}\)
\(\dfrac{7}{30}\)
\(\dfrac{7}{225}\)
\(\dfrac{29}{75}\)
Simplifiez l'expression \(\dfrac{28}{-84}\).
\(-56\)
\(-3\)
\(-\dfrac{1}{3}\)
impossible
Simplifiez la fraction \(\dfrac{5x-5a}{3a-3x}\).
\(\dfrac{0}{0}\)
\(\dfrac{5}{3}\)
\(-\dfrac{5}{3}\)
Ecrivez sans le symbole de valeur absolue l'expression \(|x^2+1|\).
\(-x^2-1\)
\(x^2+1\)
\(x^2-1\)
\(1-x^2\)
Simplifiez l'expression \(\dfrac{21}{35}\).
\(\dfrac{3}{5}\)
\(\dfrac{7}{5}\)
Elevez au carré \(\sqrt{2}-\sqrt{3}\).
\(5-2\sqrt{6}\)
\(5-\sqrt{6}\)
\(1\)
\(-1\)
Calculez \(9^{-1/2}\).
\(\dfrac{1}{81}\)
\(\pm\dfrac{1}{3}\)
\(\dfrac{1}{3}\)
Calculez \(\sqrt[5]{-32}\).
\(\frac{1}{2}\)
\(-\frac{1}{32^{5}}\)
\(-2\)
Ecrivez avec des valeurs absolues l'intervalle \([\,-4,4\,]\).
\(\vert x-4\vert\leq 0\)
\(\vert x\vert\leq 4\)
\(\vert x-4\vert\leq 4\)
\(\vert x\vert\geq 4\)
Simplifiez l'expression \(\left( \dfrac{a^{-3}b^{-2}c^{-2}}{a^2b^3c^2}\right)^2\).
\(\dfrac{1}{a^{10}b^{10}c^{8}}\)
\(\dfrac{b^2}{a^2}\)
\(a^{25}b^{25}c^{16}\)
\(ab\)
