Answer:
(all in standard form)
1. [tex]6x^2-x+4[/tex]
2. [tex]-3x^2-4x+6[/tex]
3. [tex]s^3+s^2+4s+1[/tex]
4. [tex]5a^3-a^2-2a+10[/tex]
5. [tex]a^4+a^3-3a^2+4[/tex]
6. [tex]u^3-u^2+9u+2[/tex]
7. [tex]-8u^2+5u-2[/tex]
8. [tex]81y^3+3y^2+9y+18[/tex]
9. [tex]-3a^2+5a-2[/tex]
10. [tex]21^3+2b^2+4b-8[/tex]
