A = (2 racine carré 3 - 3 racine carré 2 )²
B = 50 racine carré 45 - 3 racine carré 20 + 6 racine carré 125
A = (2 √ 3 - 3 √ 2 )²
=4*3-12√6+9*2
=30-12√6
B = 50 √ 45 - 3√ 20 + 6 √125
=50*3√5-3*2√5+6*5√5
=150√5-6√5+30√5
=174√5
A = (2 √ 3 - 3 √ 2 )²
=4*3-12√6+9*2
=30-12√6
B = 50 √ 45 - 3√ 20 + 6 √125
=50*3√5-3*2√5+6*5√5
=150√5-6√5+30√5
=174√5