bonjour
b = 7 / 2 √5
= 7 ( 2 √5) : ( 2 √5)²
= 14 √5 : 20
= 7 √5 / 10
C = √3 / 4 √2
= √3 ( 4 √2) / ( 4 √2)²
= 4 √6 / 32
= √6/8
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A = √2/2 ( √2 + 1 / √2)
= √2 /2 ( √2 ( √2) + 1 )/( √2)²
= √2 /2 ( 3/2 )
= 3 √2 ) / 4
idem pour le B
C = 2 √3 - 5 * 3 = 2 √3 - 15
D = 10 - 35 √36
= 10 - 35 * 6
= 10 - 210 = - 200
E = √12 + 2 √2 = 2 √3 + 2 √2
F = 2 * 12 - 2 * 6 + 2 √72
= 24 - 12 + 12 √2
= 12 + 12 √ 2
