I was finishing a 50 problem packet and these problems took me a long time to figure out however I got them wrong, can any one help me on them?

15.* 4 + x4

16.* 1 + a2 + a4

21. 3a2 + 1 - 3a – a3

19.* - x4 - 4a4

7.* x4 + 4 y4

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- Aug 27th 2009, 07:45 PMyitsonggHelp me on these all night stumpers
I was finishing a 50 problem packet and these problems took me a long time to figure out however I got them wrong, can any one help me on them?

15.* 4 + x4

16.* 1 + a2 + a4

21. 3a2 + 1 - 3a – a3

19.* - x4 - 4a4

7.* x4 + 4 y4

- Aug 27th 2009, 07:58 PMQM deFuturo
- Aug 27th 2009, 09:04 PMyitsongg
Factor

- Aug 28th 2009, 07:13 AMstapel
What is the meaning of your "star" notation? What operation is being indicated by this?

Thank you! (Wink)

**Formatting Math as Text** - Aug 28th 2009, 10:04 AMyitsongg
The star means nothing not part of the problem

- Aug 28th 2009, 11:47 AMstapel
- Aug 28th 2009, 03:34 PMmr fantastic
There are numerous problems with the way you have posted these questions. Some have already been mentioned. Another problem is the following:

Are we expected to assume that 3a has a different meaning to a3? Are we meant to assume that by a3 you mean a^3 etc.

If you want to get effective help in a timely manner, please post your questions clearly using standard notation and appropriate formatting. Showing the work you've done and answers that you got will also assist people in giving the help that is required.