1. 2a² + 3a² + 4a
2.5efg² + e²fg² -efg -3
3.k + 3k² +7k³ -12k⁴ +7
4.abc³
5.22
![1 2a 3a 4a25efg Efg Efg 33k 3k 7k 12k 74abc522 class=](https://ph-static.z-dn.net/files/ddc/c38db6651caebc5d055e63bb338b36ec.jpg)