(3a-7)^2
1. 9a^2-21a-21a+49
2. 3a(3a-7)-7(3a-7)
3. (3a-7)(3a-7)
4. Combine like terms
Answer:
24 i'm pretty sure sorry if i am wrong
Step-by-step explanation:
Answer:
Step-by-step explanation:

Yes it’s school p just mind the mean
It is less than 324.21, because as you can see, all the numbers are equal until you get to the 0 & 1, and 1 is greater than 0