Svp l'exercices 3 ou 4 ou les deux nimporte svpp pour demainn ♥

exercice 3

1) A=4/3+1/3x5/2-7/18
A=4/3+5/667/18
A=24/18+15/18-7/18
A=32/18
A=16/9

2) B=300000000x0,00004/60000000
B=0,0002
B=2x10^-4

C=5√12-9√75+4√75
C=5√4x3-9√25x3+4√25x3
C=10√3-45√3+20√3
C=-15√3

ex 3

1) A=4/3+1/3x5/2-7/18
=4/3+5/667/18
=24/18+15/18-7/18
=32/18
=16/9

2) B=300000000x0,00004/60000000
=0,0002
=2x10^-4

3)C=5√12-9√75+4√75
=5√4x3-9√25x3+4√25x3
=10√3-45√3+20√3
=-15√3