1.calculati :
a. (x+y+z)^3
b.(2x+3y+z)^2
c. ( a+b+1)^2
d.(x-y+3)^2
e.(a-4b-3c)^2
f.(2x-2y-1)^1

2. Calculati :
a.(x+2)^3
b.(x-1)^3
c.(2x-y)^3
d.(3x-5y)^3

3. calculatii:
a.(x-2)^2+(x+2)^3
b.(a+x+2)^2+(a+1)^3-x(x-1)
c.(x+2y+3)^3+(2y-x-3)^2
d.(x-3y)^3+(y+2)^3+(x+y-2)^2


Este urgent ....