Question
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Exercice n°1: Développer
A=(x-4)(x+6)
F (4-2x)(-1-3x)
E=(x+2)(-x-3) + 3x
D=x(x-1)-3(x+1)
Exercice n°1: Développer
A=(x-4)(x+6)
F (4-2x)(-1-3x)
E=(x+2)(-x-3) + 3x
D=x(x-1)-3(x+1)
Asked by: USER6213
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127 Answers
Answer (127)
Bonjour;
A=(x-4)(x+6)
= x² +6x -4x -24
= x² +2x -24
F (4-2x)(-1-3x)
= -4 -12x +2x +6x²
= 6x² -10x -4
E=(x+2)(-x-3) + 3x
= -x² -3x -2x -6 +3x
= -x² -2x -6
D=x(x-1)-3(x+1)
= x² -x -3x -3
= x² -4x -3