Sagot :
bonjour
A = ( x - 1 ) ( 2 x - 3 - x + 1 )
= ( x - 1 ) ( x - 2)
B = ( x + 5 ) ( x + 5 - 3 x + 6 )
= ( x + 5 ) ( - 2 x + 11 )
C = ( 7 x - 1 ) ( x - 3 - 1 )
= ( 7 x - 1 ) ( x - 4 )
Réponse :
Explications étape par étape
Bonjour
factorisation
A=(2x-3) (x-1) - (x-1) (x-3)
A = (x - 1)(2x - 3 - x + 3)
A = (x - 1)(x)
A = x(x - 1)
B=(x+5) carré-(x+5) (3x-6)
B = (x + 5)(x + 5 - 3x + 6)
B = (x + 5)(-2x + 11)
C=(7x-1) (x-3) - (7x-1)
C = (7x - 1)(x - 3 - 1)
C = (7x - 1)(x - 4)