Answer:
5.
I
[tex]x ^ { 3 } +3x ^ { 2 } -2x+2 \div x+3 \\ \\ \frac{\left(x^{3}+3x^{2}-2x+3\right)x}{x}+\frac{2}{x} \\ \\ \frac{\left(x^{3}+3x^{2}-2x+3\right)x+2}{x} \\ \\ \frac{x^{4}+3x^{3}-2x^{2}+3x+2}{x}[/tex]
2.
[tex]4x+2x ^ { 3 } -1 \div 2x-2 \\ \\ \frac{8x+4x^{3}-x-4}{2} \\ \\ 4x^{3}+7x-4 \\ \\ \left(2x-1\right)\left(2x^{2}+x+4\right) \\ \\ \frac{\left(2x-1\right)\left(2x^{2}+x+4\right)}{2} \\ \\ 2x^{3}+\frac{7x}{2}-2 \\ \\[/tex]
