ANIOS13
Answered

Svp !! URGEEEEEEEEEENT

Ecrire le plus simplement possible :

1) 3(1-x) + 2(3x-2)
2) -6(a-b) + 2(2b-a) - 8(1,25b - a)
3) (2x+y)(z-3t) - (x-y)(2z+3t)

Merci D'avance !!! :D

Sagot :

CETB
1)
3(1-x)+2(3x-2)
3-3x+6x-4
3x-1

2)
-6(a-b) + 2(2b-a) - 8(1,25b - a)
-6a+6b+4b-2a-10b+8a
0

3)
(2x+y)(z-3t) - (x-y)(2z+3t)
2xz-6xt+yz-3yt-2xz-3xt+2yz+3ty
-9xt+3yz
1) 3(1-x)+2(3x-2)=3-3x+6x-4=3x-1

2) -6(a-b)+2(2b-a)-8(1,25b-a)=-6a+6b+4b-2a-10b+8a=0

3) (2x+y)(z-3t)-(x-y)(2z+3t)=2xz-6xt+yz-3yt-2xz-3xt+2zy+3yt=-9xt+3yz