bonsoir
la prochaine fois, poste à l'endroit STP
a = √288 = √2*144 = 12√2
b = √12 = √3*4 = 2√3
c = 2√45 - 5√20 - √80 = 2√5*9 - 5√5*4 - √5*16
c = 6√5 - 10√5 - 4√5 = - 8√5
d = √100 - 25 = √75 = √3*25 = 5 √3
e = √8 x √50 x √18 = √400 x √2*9 = 20 x 3√2 = 60√2
f = (5√7 + √3)² = 175 + 5√21 + 3 = 178 + 5√21
g = (3√6 - 5√2)² = 54 - 30√12 + 50 = 104 - 30√12
h = (2√5 - 6) ( 2√5 + 6) = 20 - 36 = - 16
