Merci d'avance. 1) Développer :
A= (2x -1)² + (x +1 )²
B= 2(1-x)(2x + 7 )
C= x+2(x - 5) +8 (3-2x)
D=(x -1)(x+2) - (2x+5)²
A= (2x -1)² + (x +1 )²
B= 2(1-x)(2x + 7 )
C= x+2(x - 5) +8 (3-2x)
D=(x -1)(x+2) - (2x+5)²
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