Posted by **Crystal** on Wednesday, May 15, 2013 at 4:05pm.

How do you work out this problem?

3x3 + 2x2 + 3x+2

I showed three different people my work an they said I did it wrong I am so confuse.

- College Algebra -
**Steve**, Wednesday, May 15, 2013 at 4:12pm
hard to say what's wrong, since you don't say what you're trying to do.

factor it? Rearrange things a bit:

3x^3 + 3x + 2x^2 + 2

3x(x^2+1) + 2(x^2+1)

(3x+2)(x^2+1)

- College Algebra -
**Anonymous**, Tuesday, May 21, 2013 at 4:22pm
If the cost of a cell phone has decreased 400% during the past 10 years, does that correspond to a cost decrease of four times? Explain your answer as though you were talking to someone who has never taken algebra.

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