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qwertyuioop · Jun 13, 2012, 04:40 PM

I have 2 put this in descending powers...
7x-2+3xto the 5th power - 4x to the 2nd power +x to the 4th power
is the answer..
7x-2 +x to the 4th power
3xto the 5th power - 4x to the 2nd power +x to the 4th power +7x-2
is this correct?

qwertyuioop · Jun 13, 2012, 04:44 PM

I have 2 put this in descending powers...
7x-2+3xto the 5th power - 4x to the 2nd power +x to the 4th power
is the answer..
7x-2 +x to the 4th power
3xto the 5th power - 4x to the 2nd power +x to the 4th power +7x-2
is this correct?

ebaines · Jun 13, 2012, 05:03 PM

Please do not double-post questions. Are you in middle school or high school?

qwertyuioop · Jun 13, 2012, 05:10 PM

Middel school but going in2 high school so I wasn't sure of which one I shld write! But are you gonnna help me w/ my problom?
Thanks if you are !

qwertyuioop · Jun 13, 2012, 05:12 PM

Please help me I have a MATH FINAL!!

ebaines · Jun 13, 2012, 05:12 PM

So your answer is:

$<br /> 3x^5-4x^2 +x^4+ 7x -2 <br />$

Remember that $x = x^1$ , and a constant like -2 is equivalent to $-2x^0$
and would it change you answer?

qwertyuioop · Jun 13, 2012, 05:15 PM

awsome thanks but what about if I have 2 put in assending powers on...
x to the third power -3 -5x + x to the second power?

ebaines · Jun 14, 2012, 06:08 AM

Originally Posted by qwertyuioop

awsome thnx but wat about if i have 2 put in assending powers on...
x to the third power -3 -5x + x to the second power??

Qwerty - first it's helpful to use the carat character "^" as shorthand for "to the power of." Hence you are asking about this:

x^3-3-5x+x^2

Same process as before: replace the -3 by -3x^0 and -5x by -5x^1, and you get:

x^3 -3x^0-5x^1+x^2

Can you put this in order of ascending powers of x?

qwertyuioop · Jun 14, 2012, 06:14 AM

so it would be..
(ascending is from smallest 2 freatest right?)
x^2+x^3-3x^0-5x^1

but why did u put -5x^1 have a 1 why not a zero..
and why did u put -3x^0 have 1 0 why not a 1?