Urgent svp Factoriser : A= ( x+2 ) ( 3x - 1 ) + ( 5-4x ) ( x+2 ) B= ( x-1 ) ( 2x + 3 ) -7 + 7x
Mathématiques
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Question
Urgent svp
Factoriser :
A= ( x+2 ) ( 3x - 1 ) + ( 5-4x ) ( x+2 )
B= ( x-1 ) ( 2x + 3 ) -7 + 7x
Factoriser :
A= ( x+2 ) ( 3x - 1 ) + ( 5-4x ) ( x+2 )
B= ( x-1 ) ( 2x + 3 ) -7 + 7x
1 Réponse
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1. Réponse fati04
A= ( x+2 ) ( 3x - 1 ) + ( 5-4x ) ( x+2 )
A= 3x2 -x +6x -2 + 5x +10 -4x2 -8x
A= 3x2 -4x2 -x -8x +6x +5x +10 - 2
A= -x2 -9x +11x +8
A= -x2 +2x + 8
B= ( x-1 ) ( 2x + 3 ) -7 + 7xB= 2x2 +3x -2x -3 -7 + 7x
B= 2x2 +x +7x -10
B= 2x2 + 8x - 10