Réponses

2014-06-03T11:52:46+02:00
Dans tous les exercices V se lit racine de

Exercice 1
A = V80 = V(16x5) = 4V5
B = V18 = V(2x9) = 3V2
C = V48 = V(16x3) = 4V3
D = V75 = V(25x3) = 5V3
E = V72 = V(9x8) = 3V8
F = V54 = V(9x6) = 3V6
G = V44 = V(4x11) = 2V11
H = V12 = V(4x3) = 2V3

Exercice 2
A = V2 x V2/V9 = V(2x2)/V9 = V4/V9 = 2/3

Exercice 3
A = 4 x V24/V6 = 4 x V(24/6) = 4 x V4 = 4 x 2 = 8

  • Utilisateur Brainly
2014-06-03T13:27:00+02:00
Ex 1 : 

= \sqrt{80}  \\ =4 \sqrt{5}

= \sqrt{18}   \\ =3\sqrt{2}

= \sqrt{48}  \\ = 4\sqrt{3}

=\sqrt{75} \\ = 5\sqrt{3}

=\sqrt{72} =3 \sqrt{8}

 =\sqrt{54}  \\ =3 \sqrt{6}

= \sqrt{44 }  \\ =2 \sqrt{11}

= \sqrt{12}  \\ =2 \sqrt{3}

Ex 2 :

= \sqrt{2} * \frac{ \sqrt{2} }{ \sqrt{9} }  \\ = \frac{ \sqrt{4} }{ \sqrt{9} }  \\ = \frac{2}{3}

Ex 3 :

=  \sqrt{4}  * \frac{24}{ \sqrt{6} }  \\ =4 \sqrt{4}  \\ =4*2 \\ =8