Simplify the Expression (Example Included)

Jan 2016
16
1
Indiana
I saved JPEGs of the problem and example, so I don't confuse anyone by writing out the problem with parentheses, carrots, etc. You can view larger resolutions of the problems if you click on them.

Here is the problem itself:

snip_snip.jpg

Here is the example for the problem:

ex.jpg

I came up with the solution:

porb.jpg

And Web Assign said it was incorrect.
 

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skeeter

MHF Helper
Jun 2008
16,217
6,765
North Texas


$(3x+2)^3 \bigg[18(2x^2-3x+1) + (3x+2)(4x-3)\bigg]$

$(3x+2)^3 \bigg[36x^2-54x+18 + 12x^2-x-6\bigg]$

now combine like terms within the brackets ...
 
Jan 2016
16
1
Indiana
Skeeter, thank you so much! So the answer would be:

(3x+2)3 ​(48x2-55x+12)
 
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