Randerolf

Hey guys! I've really learned a lot so far from the links that you've given me. thank you very much! I'm still having few troubles with some promblems that I need to understand for my test

Answers are on bottom. I worked some out as much as I could.

Thank you for your help!

Question 1 - Factor each polynomial

20z2 + 18x2 – 8zx – 45zx
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Question 2 – Simplify the rational expression by reducing to lowest terms.

8x3 – 27_____
8x2 – 14x + 3

Next __ ?___________
(4x - ?)(2x- ? )

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Question 3 – Simplify the following rational expressions by performing the indicated operations. Write answer in lowest terms:

2m² – 5m +12 ÷ 4m² - 9________
m ² - 10m + 24 m ² - 9m +18

Next (2m+?) (m-?) ÷ (2m + 3)(2m-3)
(m-4)(m-6) (m -6)(m-3)
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Question 4 – Divide:
2x ² - 4x + 5
3x – 2
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Question 5 – Expand:

(4x ³ - 3y²)4


ANSWERS

1 – (2x-5z)(9x-4z)
2-
4x2 +6x +9
4x -1
3 -
m-3
2m-3

4-
2x – 8 + 29___
3 9 27x - 18

("two over three times X minus eight over nine plus 29 over 27x minus 18")

5- 256x12 – 768x9y2 +864x6y4 – 432x3y6 + 81y8