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Key Concepts Quiz 9.2
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Use the document below to help answer questions 1 and 2:

Adding Polynomials Worked Example (22.0K)



1

Add (2x + 3y – 4z) + (5x – y + 6z).
A)–3x + 2y – 10z
B)7x + 4y + 10z - 3
C)7x + 2y + 2z
D)–3x + 4y + 2z
2

Add (5x – y – 7z) + (3x – 2y + 8z).
A)8x – 3y + z
B)2x – 3y + z
C)8x – y + z
D)8x – 3y + 15z

Use the document below to help answer questions 3 and 4:

Subtracting Polynomials Worked Example (22.0K)



3

Subtract (7x + 5y – 2z) – (x – 3y – z).
A)8x + 8y - z
B)6x + 8y - z
C)6x + 2y - z
D)6x + 8y - 3z
4

Subtract (3x + 5y – 2z) – (6x – 3y + 2z).
A)9x + 8y
B)-3x + 8y - 4z
C)-3x + 2y
D)-3x + 8y





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