3. 2x*2+5x+3
5. 5x*2+13x+6
7.8p*2-14p+5
9. 10a*2-43a+12
11. 3p*2+7p-6
13.6y*2-5y-6
15. 2y*2+5y-3
17. 6x*2+5xy-6y*2
19. 1+3m-18m*2

4. 3y*2+8y+4
6.3y*2-8y+4
10.12x*2-34x+10

12. X*2-2xy+y*2