bonjour
A = √3 + 2 √12 - √75
= √3 + 2 √4*3 - √3*25
= √3 + 4 √3 - 5 √3
= 0
B = (4 + √40 ) /2
= ( 4 + 2√10) / 2
= 2 + √10
C = √8 - 7 √2 + 10 √128
= √2 *4 - 7 √2 + 10 √2*64
= 2 √2 - 7 √2 + 80√2
= 75√2
D = 4 + 4 √5 + 5 = 9 + 4 √5
E = ( 4 - 2√34) / - 10
= ( 2 - √34) / - 5
F = 4 - 3 = 1
√1/65 + √1/36 = 5/24
