👤

Sagot :

Bonsoir,

Exercice 6:

A: (4x+1)+6-6x
A: 10x+7;
B= (6x+8)+9x+6
B=15x+14;
C: (5x-5)+2+9x
C: 14x-3;
D=(8x-7)+7+5x
D=13x;
E: 9-3x+(-6x+4)
E: 9-3x-6x+4
E: -9x+13;
F=-7x-10-(-7x+9)
F=-7x-10-7x+9
F=x-1;

Exercice 7:
A: x*9x : 1x*9x
A: 9x;
B= 8x*9x
B= 72x;
C: -9+(-x+7)(7x+9)
C: -9-(x-7)(7x+9)
C: -9-(7x+2)
C: -7-7x;
D= (-9x+6)(-9x-7)+5x+5
D= (-18x-1)+5x+5
D= -13x+4;
E: -3x²+(-x+2)(-2x-2)
E: -9x-(x+2)(-2x-2)
E: -9x-1x.
J’espère t’avoir aidé !

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