
1.3a-3b
2.3x+2y
3.3y+3
4.2m+6n
5.2a2-a
6.3b+2c
7.k
8.2x+10
9.15x3-6x2
10.2a3b2-5b4
11.9xy2-x2y
12.+5a5-8b2

1.=a8
2.=b9
3.=-m6
4.=x8
5.=y11
6.=c11
7.=p2n
8.=a4m
9.=x3kn
10.=yn+5
11.=z3n-2
12.=b3-m
13.15a6
14.-40b11
15.21a5b3

1.5x+10 2.18y-24 3.14m+21n
4.2ac+5bc 5.-12ab+8a2 6.-10x2+6yx
7.-6a+8b-10c 8.x5+x4-2x3 9.-15y8-20y7+5y6

1.x2-x-6 2.10x2+22x+4 3.10b-3b2+8
4.8y2-26y+15 5.6a2-a-12 6.35z2-29z+6
7.2-10x+12x2 8.13x+3-10x2 9.12b2+1bc-20c2
