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PrettyJennifer
@PrettyJennifer
April 2022
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Exercice 01
développer et réduire :
a = (2x - 5) (-5x + 3)
b = (-4 + 3x) (3 - 2x)
c = (-8x + 5) (-2x + 4)
d = (3 - 7x) (3 + 7x)
Exercice 02
développer et réduire :
A = (5x + 4) (3x + 5) - (6x + 3) (2x - 7)
B = (-3x + 8) (4x - 5) + (2x - 3) (6x - 2)
Sinon petite question Chimie :
1- quels sont les ions qui forment le précipité hydroxyde de calcium ?
2- quels sont les ions spectateurs ?
3- donner le nom de la solution
( NIVEAU 4em)
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