L'énoncé
Cet exercice est un QCM. Cochez la ou les bonne(s) réponse(s).
Tu as obtenu le score de
Question 1
\(\sqrt {49\times36 }=\)
\(42\)
\(7\times 6\)
\(49\times 36\)
\(1764\)
Question 2
\(\sqrt{25}\times \sqrt {81}\times 2 = \)
\(5\times 9\times 2\)
\(\sqrt{25\times 81\times 2}\)
\(90\)
\(45\sqrt2\)
Question 3
\(\sqrt{\dfrac{16}{9}}=\)
\(\sqrt{\dfrac{3}{4}}\)
\(\sqrt{\dfrac{4}{3}}\)
\( \dfrac{4}{3}\)
\(\left(\dfrac{4}{3}\right)^2\)
Question 4
\(\large \sqrt{\frac{16}{9}}\times \large \sqrt{\frac{4}{49}} = \)
\(\large \sqrt{\frac{4}{3}}\times \large \sqrt{\frac{2}{7}}\)
\(\large{\frac{4}{3}}\times \large{\frac{2}{7}}\)
\(\large{\frac{8}{21}}\)
\(\large \sqrt{\frac{16}{9}\times \large \frac{4}{49}} \)
Question 5
\(5\sqrt7+12\sqrt7 + \sqrt{49}=\)
\(17\sqrt7+49\)
\(7+ 17\sqrt7\)
\(24\sqrt7\)
\(17\sqrt{49}+49\)