Answer:
-4c² + 4c +6
Step-by-step explanation:
combine like terms
2+ 4 = 6
7c - 3c = 4c
- 4c
Hope this helps!
51. I checked the comments but I still didn't understand it, sorry :/
54.
(43+45+47+49)=184
They are all odd and they are in consecutive order (one after another)
Answer: Kg/m³
Step-by-step explanation: Mass/ Volume
8(51)
=8(50+1)
=(8*50)+(8*1)
=(8*5*10)+(8*1)
=400+8
=408