Question

Subliniati termenii asemenea si respectati padii pentru rezolvare
1)a)3x•(2-x)-2•(x^2+3x-2)=
B)(3x^2-2x+2)•(x+2)=
C)(3x-2)•(x-4)+(x+3)•(x-4)=
D)(3-4x)•(2x-5)-(x-3)•(2x-5)=

Answer 1

Am atasat rezolvarea

Answer 2

a)3x*(2-x)-2*(x^2+3x-2)=
=6x-3x^2-(2x^2+6x-4)=
=6x-3x^2-2x^2-6x+4=
=x^2+4

b)(3x^2-2x+2)*(x+2)=
=3x^3-2x^2+2x+6x^2-4x+4=
=3x^3+4x^2-2x+4

c)(3x-2)*(x-4)+(x+3)*(x-4)=
=3x^2-12x-2x+8+x^2-4x+3x-12=
=4x^2-15x-4

d)(3-4x)*(2x-5)-(x-3)*(2x-5)=
=6x-15-8x^2+20x-(2x^2-5x-6x+15)=
=26x-15-8x^2-(2x^2-11x+15)=
=26x-15-8x^2-2x^2+11x-15=
=37x-30-10x^2