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​Algebra Introduction: Quiz 5 - Answers

1) 7x4 – 4x3

 

2) 30y5 – 3y4 + 6y3

 

3) -15p3 – 25p6 + 105p

 

4) 28r3 – 14r5 – 35r7

 

5) 20a2b2 + 50ab3 – 60ab4

 

6) -2c + 3c2 – c3 + 8c4


Working
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Questions
Expand the brackets below. 

1) x2(7x2 – 4x)

 

2) 3y3(10y2 – y + 2)

 

3) -5p(3p2 + 5p5 – 21)

 

4) 7r3(4 – 2r2 – 5r4)

 

5) 10ab2(2a + 5b – 6b2)

 

6) -c(2 – 3c + c2 – 8c3)

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