svp aider moi dévloper et reduit les expretion suivante a= 2(x-2)+3(x+2) b=4(1-x)+(3x+1) c= 3(2x – 5) – 2(x - 1) d=3(3x – 2) - (2 - x)

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