Exercice 3 :
A=(5-2√3)²=5²-2*5*2√3+(2√3)²
=25-20√3+4*(√3)²
=25-20√3+4*3
=25-20√3+12
A=37-20√3
B=(√2+√5)(√2-√5)=(√2)²-(√5)²
=2-5
B=-3
Copyright © 2024 ELIBRARY.TIPS - All rights reserved.
Lista de comentários
Verified answer
Exercice 3 :
A=(5-2√3)²=5²-2*5*2√3+(2√3)²
=25-20√3+4*(√3)²
=25-20√3+4*3
=25-20√3+12
A=37-20√3
B=(√2+√5)(√2-√5)=(√2)²-(√5)²
=2-5
B=-3