i just did the test and the answer was 120 trust me
Answer:
the difference is 14
Step-by-step explanation:
subtracting 3x2 4x – 5 from 7x2 x 9 results in a polynomial
Subtract 

Multiply negative inside the parenthesis


Now we subtract 4x^2 -3x from the result 


14
1. b
2. e
3. a
4. c
5. d
6. f
7. g
8. h
hope this helps there is really no way of explaining you would have to study you theorems
Answer:
r = 1
Step-by-step explanation:
In this question, we have to solve for the vallue of "r". We will use the distributive property shown below to ease our process.
Distributive Property:
a(b+c) = ab + ac
Now, lets solve this:

As we have seen the value of r is "1"
Answer:
I am not totally sure, but I think the answer is D.