[tex](-3x^5+2x^4-3x^3+4+2)\cdot(2x^5+6x^3-2x^2+x-3)=\\=(-3x^5+2x^4-3x^3+6)\cdot(2x^5+6x^3-2x^2+x-3)=\\=-6x^{10}-18x^8+6x^7-3x^6+9x^5+4x^9+12x^7-4x^6+2x^5-6x^4-6x^8-18x^6+6x^5-3x^4+9x^3+12x^5+36x^3-12x^2+6x-18=\\=-6x^{10}+4x^9-24x^8+18x^7-25x^6+29x^5-9x^4+45x^3-12x^2+6x-18[/tex]
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[tex](-3x^5+2x^4-3x^3+4+2)\cdot(2x^5+6x^3-2x^2+x-3)=\\=(-3x^5+2x^4-3x^3+6)\cdot(2x^5+6x^3-2x^2+x-3)=\\=-6x^{10}-18x^8+6x^7-3x^6+9x^5+4x^9+12x^7-4x^6+2x^5-6x^4-6x^8-18x^6+6x^5-3x^4+9x^3+12x^5+36x^3-12x^2+6x-18=\\=-6x^{10}+4x^9-24x^8+18x^7-25x^6+29x^5-9x^4+45x^3-12x^2+6x-18[/tex]