aidez moi svp c'est pour demain matin niveau seconde.
Exercice1: Développez les expressions suivantes:

A-) (3x+3)²+(-2x+5)² B-) (4x-√2)² C-) (3y-6)(-3y+6) D-) (2√x+4)²

Exercice2: Factorisez ces expressions:

A-) 9b²-72b+144 B-) 25a²-9 C-) 36x²+12x√3+3 D-) (6a-4)²-(-14a-2)²
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