Zad 1 Prosze o pomoc

[tex]S=x^3-2x^2+3x^5-4=3x^5+x^3-2x^2-4\\\\T= 3x^2-2x^4+4-x^3=-2x^4-x^3+3x^2+4\\\\\\S+T =3x^5+x^3-2x^2-4 -2x^4-x^3+3x^2+4=3x^5-2x^4+x^2\\\\\\S-T =3x^5+x^3-2x^2-4 -(-2x^4-x^3+3x^2+4)=\\\\=3x^5+x^3-2x^2-4+2x^4+x^3-3x^2-4=3x^5+2x^4+2x^3-5x^2-8[/tex]