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Key Concepts Quiz 9.3
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Use the document below to help answer questions 1 and 2:

Multiplying a Polynomial by a Monomial Worked Example (23.0K)



1

Expand 3(4a + 3b).
A)12a + 9b
B)12a + 3b
C)4a + 9b
D)4a + 3b
2

Expand p(2q – 5r + 4s).
A)2pq – 5r + 4s
B)2pq – 5pr + 4s
C)2pq – 5pr + 4ps
D)2pq – 5r + 4ps

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

Multiplying a Polynomial by a Negative Monomial Worked Example (22.0K)



3

Expand –x(x2 – 2xy + y2).
A)?x2 + 2xy – y2
B)?x3 – 2x2y + xy2
C)x3 – 2x2y + xy2
D)–x3 + 2x2y – xy2
4

Expand –3m(2m3 – 3m2 + 4m – 5).
A)6m4 – 9m3 + 12m2 – 15m
B)–6m4 + 9m3 – 12m2 + 15m
C)–6m4 + 3m3 – 4m2 + 5m
D)2m4 – 3m3 + 4m2 – 5m





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