Am si eu nevoie de ajutor cu 3,4,5,6


4. Calculaţi:
a) 2x (3x+5) =
c) (-x²+x).(-6x²y) =
e) (-2x²).(-8x+9y)-(-4xy) = (E
8) (-3x² √2)(x³ √5-x√8)-(-x³√10) = th
5. Calculați: a) 4x(x+1)-2x(4-x) =
c) 3x (5-2x)-5x(1-3x)=x
(2x²y) : 2x³1²=2
c) (2x²y) ³:2x³,² = (8-2) (E-23-25 (1
(2x√3)(3x√2)=
c)
1)
4
2 N
=
E) (b)-4xy-(2x+3y) =
d) (x²-5x+2)-(-3.xy) =
2x+3y)=
=
1) xy √2-(xy √8-x² √6) =
h) −0,25x³y². (4x³-2xy² √4) =(4)
b) x(4-2x) + 3x (4x+1)=
d) 4x²-2x+3. [2x-4x(4+5x)]=
=)
E)
6. Să se calculeze:(3-) (2.
a) 5. (3x-8y)-7x+5y=
c) 4-3 (1-2x) + 4x=
e) 5x (2x+3)-4-(x+2) =
E)-(24
g) 7x-4-[2x+5. (x+3)-1] =)(x-8)(
i) 3-[x+5-(2x-3y)]-5-(4x-3y)=
= (65+5Vz) Vx60
b) 4. (x+y)-5-(3x+y)=
d) x-5-(x-3y) +2. (x+y)=
f) 4-3-[5x-2-(x+1)]=
h) 7x-4-[y+3 (x-2y)-x]=
VITA-DE-​