Answer: 
Step-by-step explanation:
Given
The expression is

Use identity 
Apply identity

Answer:
A
Step-by-step explanation:
5 parts of Hi-C.
This is not my strong subject.
But I got this answer because 3=2=5
10-5=5
Answer: Ok, so this question is confusing to me as well, and I have this same question on school. So when I get the answer, I will try to explain it to you the best I can. :) God Bless. Stay :D
Step-by-step explanation:
3 - 50(2x + 1)
3 - 100x - 50
-100x + (3 - 50)
-100x - 47