1.. What is the sum of (- 2x + 4y) and (- 2y + 4x) = ?
a. -4x + 8y
b. 2x + 2y
2x - 2y
d. 6x + 6y
2. What must be added to this to make it correct?
(-12ab) +
= 10 ab
a.- 2ab
b. - 22 ab
c. 22 ab
d. 2ab
3. What is the sum of the polynomials (-a +2b - 3c) and -- 2b + 3c?
a. no answer
b. 2a + c
d. - a
c. O
4. What is the difference of ( 2x - y) - (-x +2y)?
a. 3x - 3y
d. -x + y
C. X-y
b. - 3x + 3y
5. What must be in the box to make the subtraction correct?
(4ab) D
8ab
b.- 4b
a. 4ab
d. - 4ab
C.- 8ab​