Question

1. (9m + 6) + (–5m – 6)

4m + 12
14m + 12
14m – 12
4m


2. (3r^2 + 7r + 1) + (4r^2 – 8r – 2)

7r2 + 15r – 1
7r2 – r – 1
7r2 – 15r – 3
–r2 – r – 1

3. (6h + 1) – (9h + 4)

–3h – 3
15h – 5
–3h + 3
–3h + 5

4. (–7w^2 – 2w – 1) – (–5w^2 + 3w – 2)

12w^2 + 5w + 1
–2w^2 – 5w – 1
–2w^2 – 5w + 1
–12w^2 – 5w – 3

My answers:
1. 14m + 12
2. 7r2 – r – 1
3. 15h – 5
4. –12w^2 – 5w – 3

Answer 1

1, 3, and 4 are wrong.

Please go back and study working with negative numbers.

Answer 2

ok

is #4 "-2w^2 - 5w + 1"?

Answer 3

I agree with Ms. Sue. Negative number play seems to be the problem with the incorrect problems.

Answer 4

4 is right now.

Answer 5

1 D
2 B
3 A
4 C
5 C

Answer 6

CrendyGal is CORRECT
1 D
2 B
3 A
4 C
5 C

Answer 7

For 8th graders in ACA the Lesson 2: Adding and Subtracting Polynomials it is:
D
B
A
D
C
It could be different for some so just be careful

Answer 8

Mystery is 100% correct 😁

Answer 9

mastery #4 is wrong its C but the rest are correct

Answer 10

Crandall is right

Answer 11

Crandygal is still correct for UCA