Algebra Combining like terms
posted by Kati on .
It is a multiple choice test. I have placed my after the question. I am not asking anyone to do it for me I simply would like someone to check my answers and maybe if their nice tell me what went wrong on the ones i get wrong. Thanks!
1.) Combine Like Terms: 2
12 + 16 + 9x2
37x2
9x2 + 28
17x2
17x2 + 5
2.) 5b + 7b  b4  14b2  18b  4b4 :3
b4  14b3 6b
5b3  14b2 + 6b
5b4  14b2  6b
b4  14b2 + 6b
3.) 6r  10r : 2
4r
16r
16r2
16r4
4.) 15k + 17k + 3k + 19k  2: 4
48k  2
52k  2
54k  28
54k  2
5.) 11d + 13d + 8d2  16 + 18d2 + 11d  9d2 : 3
15d3 + 35d  16
15d2 + 35d  16
17d2 + 35d  16
17d2 + 35d  18
6.) 19g  3g : 3
21g2
16g
21g
16g2
7.) 8n + 13  12n + 6n2  10  5n2: 2
2n2  4n + 3
n2  4n + 3
2n2  4n + 4
n2  4n + 4
8.) 15e  7 + 4e2  17e + e2 : 1
5e2  2e  7
e2  2e  7
5e2  2e  5
e3  2e  7
9.) 14j2  2j + 18j2  9j + 14j4 + 16j  11j2 : 2
12j4 + 21j2 + 5j
14j4 + 21j2 + 5j
12j4 + 21j4 + 15j
14j4 + 21j3  15j
10.) 13u  6 + 2:4
11u  4
11u  2
13u + 4
13u  4
11.) 19c3  15c + 5c3  17c2 + 7c4: 3
2c4 + 14c3 + 17c2 + 13c
2c4 + 24c3 + 17c2  13c
7c4 + 24c3  17c2  15c
7c4 + 4c2  17c2  13c
12.) 10 + 1  4  8h: 4
8h + 7
8h + 7
8h  7
8h  7
13.) 3p  12  14  13p  7  2  5p2: 1
5p2  10p  35
5p2  10p  35
5p2 + 10p  35
5p2 + 10p + 35
14.) 3v + 4  10 + 18v  16v:1
5v  6
5v + 6
5v  6
5v + 6
15.) 6y + 8y2 + 19y + 12:4
6y2  25y + 12
6y2 + 25y + 12
8y2  25y + 12
8y2 + 25y + 12
16.) 17m  11m:2
6m2
28m
6m
28m2
17.) 1  15a + 9:1
15a + 10
15a + 10
15a + 8
15a + 8
18.) 18w + w + 5w2  13w + 7w  3w3  15w2: 2
3w3 +10w2 + 12w
3w3 + 10w2 + 12w
3w3  10w2 + 13w
3w3  10w2 + 13w
19.) 19f2 + 14 + 2f2 + 11f + 8f2:1
29f2 + 11f + 14
29f2  11f + 14
2f2 + 11f + 14
9f2 + 11f + 14
20.) 17  12q  6q2  16q  9 + 10: 2
6q2  28q + 16
6q2 + 28q + 18
6q2  28q + 18
6q2  28q + 18
Thank you for any help!

The following problems are wrong
3: What's 610?
12: Check your signs carefully.
16: You added and you should have subtracted.
17: Check your signs again.
18: Completely wrong.
20: You only have one q^2 term, which is 6q^2, and only one choice starts with that..
**If you have something like 67x, when written the opposite way it becomes 7x+6. You got several wrong because of this. 
I re looked over the questions using your advice and got a better grade because of it. Thank you!

You're welcome!