COMBINING LIKE TERMS

1. x+x=?
A) x
B) 2x
C) 0
D) x^2

2. a+a+a=?
A) 3a
B) 2a
C) a
D) a^3

3. 2a+b+a=?
A) 3a+b
B) 2ab
C) 2a+2b
D) 3a+2b

4. a+2a+3b+4b=?
A) 3a+7b
B) 3a+6b
C) 2a+5b
D) a+4b

5. 2(a-b)+a=?
A) 2a-2b
B) 3a-2b
C) 2a+2b
D) 3a+3b

6. 3(2a+b)+b=?
A) 5a-4b
B) 6a-4b
C) 5a+4b
D) 6a+4b

7. 2a+2(b-a)+a=?
A) 2a+b
B) a+2b
C) a-2b
D) 2a-b

8. 2[a-2(a-b)]=?
A) 2a-4b
B) 2a+4b
C) -2a-4b
D) -2a+4b

9. 2(a-b)+2(a+b)=?
A) -4a
B) 4b
C) 4a
D) -4b

10. a+2(a-2b)+3(a+b)=?
A) 6a+b
B) 6a-b
C) 5a-b
D) 5a+b

11. x+2(x+1)+3(y-1)=?
A) 3x+3y-1
B) 3x-3y+1
C) 3x-3y-1
D) 3x+y-1

12. a+x+2b+2a+x=?
A) 3a+2b+2x
B) 3a+2b+3x
C) 3a-2b+2x
D) 3a-2b-2x

13. ab+2a+2b+3ab+a-b=?
A) 4ab-3a+b
B) 4ab+3a-b
C) 4ab+3a+b
D) 4ab-3a-b

14. x^2y-2xy^2+x^2y=?
A) 2x^2-2xy^2
B) 2x^2y-2xy
C) 2x^2y-2xy^2
D) 4x^2y^2

15. ab^3-a^2b-3ab^3+2a^2b=?
A) 2ab^3+a^2b
B) -2ab^3-a^2b
C) -2ab^3+a^2b
D) -3ab^3+a^2b

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Answer Key

1.B  2.A  3.A  4.A  5.B  6.D  7.B  8.D  9.C  10.B  
11.A  12.A  13.C  14.C  15.C  

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