Factoriser a = ( -x +1 ) ( x +1 ) - ( -x +1 ) ( 2x +2 ) c = ( -10x -10 ) ( -x +1 ) + ( 18x +15 ) ( -x +1 )
Mathématiques
mehdiog
Question
Factoriser
a = ( -x +1 ) ( x +1 ) - ( -x +1 ) ( 2x +2 )
c = ( -10x -10 ) ( -x +1 ) + ( 18x +15 ) ( -x +1 )
a = ( -x +1 ) ( x +1 ) - ( -x +1 ) ( 2x +2 )
c = ( -10x -10 ) ( -x +1 ) + ( 18x +15 ) ( -x +1 )
1 Réponse
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1. Réponse nathalienouts
a = ( -x +1 ) ( x +1 ) - ( -x +1 ) ( 2x +2 ) on met -x+1 en facteur
a = (-x+1)(x+1-2x-2)
a = (-x+1)(-x-1)
c = ( -10x -10 ) ( -x +1 ) + ( 18x +15 ) ( -x +1 ) on met -x+1 en facteur
c = (-x+1)(-10x-10+18x+15)
c = (-x+1)(8x+5)