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Lolololo1818
@Lolololo1818
April 2019
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On considère A = 3x - (7x2 - 6x + 2) et B = 7 + (4x + 3 - 2x2).
1) Supprimer les parenthèses et réduire A et B. le 2 après 7x et 2x est un petit 2.
2) Calculer A pour x = 1 et B pour x = -1.
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A=3x-7x2+6x-2 A=7x2+9x-2 B=7+4x+3-2x2 B=2x2+4x+10 A=3(1)-7(1)+6(1)-2 A=9-9 A(1)=0 B=7+2(-1)+4(-1)+10 B=7-2-4+10 B=+11
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