Réponse :
hi cv
Explications étape par étape
a= 2(x-2)+3(x+2)
=2 x x +2 x -2 +3 x x +3 x 2
=2x +( -4)+3x+6
=2x+3x +(-4)+6
=5x +2
b=4(1-x)+(3x+1)
= 4 x 1 +4 x (-x)+(3x+1)
=4+ (-4x)+3x+1
= -4x+3x +4+1
= -1x+5
c= 3(2x – 5) – 2(x - 1)
=3 x 2x +3 x (-5) -2 x x -2 x (-1 )
=6x - 15 - 2x +2
=6x-2x-15+2
=4x-13
d=3(3x – 2) - (2 - x)
= 3 x 3x +3 x -2 - (2-x )
= 6x+(-6)-2+x
=6x-8+x
=6x+x-8
=7x-8
je suis heureuse de pouvoir t'aider
Réponse :
salut
Explications étape par étape
a= 2(x-2)+3(x+2)
=2 x x +2 x -2 +3 x x +3 x 2
=2x +( -4)+3x+6
=2x+3x +(-4)+6
=5x +2
b=4(1-x)+(3x+1)
= 4 x 1 +4 x (-x)+(3x+1)
=4+ (-4x)+3x+1
= -4x+3x +4+1
= -1x+5
c= 3(2x – 5) – 2(x - 1)
=3 x 2x +3 x (-5) -2 x x -2 x (-1 )
=6x - 15 - 2x +2
=6x-2x-15+2
=4x-13
d=3(3x – 2) - (2 - x)
= 3 x 3x +3 x -2 - (2-x )
= 6x+(-6)-2+x
=6x-8+x
=6x+x-8
=7x-8