Développer reduire et ordonner . SVP a = ( -x +1 ) ( x +1 ) - ( -x +1 ) ( 2x +2 ) b = ( 4x +1 ) (3x +2 ) - ( 6x +2 ) ( 4x +1 )
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Question
Développer reduire et ordonner . SVP
a = ( -x +1 ) ( x +1 ) - ( -x +1 ) ( 2x +2 )
b = ( 4x +1 ) (3x +2 ) - ( 6x +2 ) ( 4x +1 )
a = ( -x +1 ) ( x +1 ) - ( -x +1 ) ( 2x +2 )
b = ( 4x +1 ) (3x +2 ) - ( 6x +2 ) ( 4x +1 )
1 Réponse
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1. Réponse nonotata
a = ( -x +1 ) ( x +1 ) - ( -x +1 ) ( 2x +2 )
a = -x²-x+x+1 -(-2x²-2x+2x+2)
a = -x²+1 +2x²-2
a = x²-1
b = ( 4x +1 ) (3x +2 ) - ( 6x +2 ) ( 4x +1 )
b = 12x²+8x+3x+2 -(24x²+6x+8x+2)
b = 12x²+11x+2 -24x²-14x-2
b = -12x²-3x