Posted by **Jo** on Wednesday, January 18, 2012 at 3:16am.

Solve the following equation in the complex number system. Please show all of your work.

2x^5-3x^4-32x+48=0

- college algebra -
**Steve**, Wednesday, January 18, 2012 at 5:14am
solving quintics is hard, so look for easy roots with synthetic division

2x^5-3x^4-32x+48

(x+2)(x-2)(2x-3)(x^2+4)

= (x+2)(x-2)(2x-3)(x-2i)(x+2i)

- college algebra -
**fritz**, Tuesday, January 24, 2012 at 7:11pm
The manager of a coffee shop has one type of coffee that sells for $5 per pound and another type that sells for

$11 per pound. The manager wishes to mix 60 pounds of the $11 coffee to get a mixture that will sell for $9 per

pound. How many pounds of the $5 coffee should be used?

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