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July 28, 2015

Homework Help: algebra 2

Posted by lizzie on Sunday, August 14, 2011 at 10:03am.

I don't know how to do this.
Which describes the number and type of roots of the equation x^3 - 4x^2 + 50x + 7 = 0?

a. 1 positive, 2 negative
b. 2 positive, 1 negative
c. 3 negative
d. 3 positive.

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