MAT/222 MAT222 MAT 222 WEEK 1 DISCUSSION

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MAT/222 MAT222 MAT 222 WEEK 1 DISCUSSION

ashford university / MAT 222
12 Aug 2017
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MAT 222 WEEK 1 DISCUSSION

Week 1 - Discussio

Domains of Rational Expressions

In this discussion, you are assigned two rational expressions to work on. Remember to factor all polynomials completely. Read the following instructions in order and view the example to complete this discussion. Please complete the following problems according to your assigned number. (Instructors will assign each student their number.)

*If your assigned number is:*	*Your first rational expression is*	*Your second rational expression is*
1	a² + 2a – 10 –11a	2x – 8 x² – x
2	y² + 11y + 30 y + 5	5a – 3 a² – 49
3	u² + u – 72 3u – 15	2w – 1 w² – 9
4	x² – 6x – 55 x² – 3x – 28	b – 3 4b² – 16
5	16b² – 1 2b² + 11b – 6	c² + 2c – 10 10c² – 80c + 160
6	4w² – 9 –5w	y² – 4 2y² + y – 1
7	a² + 6a + 9 a – 10	t² + 2t – 10 t² – 6t + 8
8	81m² – 16 5m + 10	22x + 11 2x² – x
9	3a² + 16a + 5 a² – 7a + 10	b² + 7b + 10 b² – 9
10	4x² – 1 6x – 18	r² + 2r – 24 r – 2
11	t² – 14t + 49 4t – 8	3q² – 22q + 24 q² – 1
12	v² – v – 20 v² + 4v + 3	6t – 3 t
13	n² – 2n – 15 n – 2	8k + 6 8k² + 2k – 3
14	64k² – 9 2	s² + 2s – 15 s² – 36
15	4k² – 12k + 9 4k	3w² + 36 2w – 8
16	5m² + m m + 6	12a – 15 5a – 25
17	7t² – 14t 4t² – 9	36 – w² w
18	22x + 11 x² – 3x – 10	1 – 2c 20c² + 10c
19	20c³ + 5c2 – c 7c – 14	3a² – 12a 24a² – 18a
20	g² – 36 6g² + 15g	7n – 2 4n² – 25
21	1 – 2x + x² x² – 1	2c² + 5c – 25 14c – 21
22	144 – w² 8 – 2w	z² – 8z + 16 –12
23	4 + 16n² n – 8	3x² – 2x – 1 x² – 81
24	y² – 25 –6y	37 2p – 4p²
25	a² – 100 a² + 5a + 6	3b² – 9 b – 8
26	1 – x² x² + 10x + 25	2u – 2 1 – u
27	3z + 3 3z	5y³ – 75y 2y² + y – 15
28	9 – 36x² 8	15k² – 5k k² – k – 30
29	x² – 7x + 12 5x	w² – 9w – 36 16w² – 1
30	m² + 13m + 40 6m	4y – 3 25y² – 4
31	k² – 8k 17	2b + 1 3b² – 12
32	9b² + 3 41	2x – 6 10x² + 5x
33	15x² + 45 50x	42 m² – 3m
34	g² + 46g g	3k + 1 k² + k – 42
35	4a – 5 14	4m³ +16m 3m² – m
36	x² – 25 23	b² – 18b + 81 3b² – 12
37	9m² – 4 23	5x + 15 x² – 49
38	d² + 9 33	m² + 4m – 5 5m² + m
39	13n² – 13n 6n	2w + 1 9w² – 1
40	4x³ – 16 x	14 2b² – 8
41	x² + 2x – 10 3x	2x – 8 x² – 7x + 10
42	x² + x – 72 24	5b – 3 b² – 4
43	w² + 11w + 30 7w	2n – 1 4n² – 9
44	g² – 6g – 55 g	k³ + k k² – k – 42
45	16t² – 1 64	x² + 2x – 10 3x – 15

Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero.
Find the domain for each of your two rational expressions.
Write the domain of each rational expression in set notation (as demonstrated in the example).
Do both of your rational expressions have excluded values in their domains? If yes, explain why they are to be excluded from the domains. If no, explain why no exclusions are necessary.
Incorporate the following five math vocabulary words into your discussion. Usebold font to emphasize the words in your writing. Do not write definitions for the words; use them appropriately in sentences describing your math work.
- Domain
- Excluded value
- Set
- Factor
- Real numbers

Your initial post should be at least 250 words in length. Support your claims with examples from required material(s) and/or other scholarly resources, and properly cite any references. Respond to at least two of your classmates’ posts by Day 7. Is their work similar to your own? Did they use the vocabulary words correctly? Do you understand their answers?

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