S'il vous plait vite le 49,51,52,57,60,73,74 Merci 20pts a gagner

les 57 73 et 74 ne sont pas présents

Ex 49
A = √7 x √13/√91
A = √7x√13/√13x7
A = 1

B = √(4x7)/(√2 x √14)
B = 2√7/√(2x2x7)
B = 2√7/2√7
B = 1

C = 2√5/3√20
C = 2√5/6√5
C = 1/3

D = √2x√3x√6
D = √2x3x6
D = √36
D = 6

E = 3√(25/144)
E = 3x5/12
E = 5/4

Ex 51
A = √18
A = √2x9
A = 3√2

B = √50
B = √25x2
B = 5√2

C = √98
C = √2x49
C = 7√2

D = √8
D = √2x4
D =2√2

E = √72
E = √36x2
E = 6√2

EX 52
A = √27
A = √3x9
A = 3√3

B = √12
B = √3x4
B = 2√3

C = √75
C = √3x25
C = 5√3

D = √108
D = √3x36
D = 6√3

EX 60
1
√24 = √4x6 = 2√6
√54 = √9x6 = 3√6
√150 = √25x6 = 5√6
2
A = √150-2√24+3√54-5√6
A = 5√6-4√6+9√6-5√6
= 5√6