Homework Help: Algebra

Posted by John on Sunday, August 22, 2010 at 8:14pm.

Explain why x^2 + 5x + 8 is prime (not factorable). How do you know? Give 2 examples of a prime polynomial (they cannot both be binomials). Give 2 examples of polynomials that are NOT prime (they cannot both be binomials), factor them, and explain what you did to factor them.

How would you explain to another student how to decide if any given polynomial is prime or not?

Algebra - bobpursley, Sunday, August 22, 2010 at 8:22pm
x^2+5x+25/4 = 25/4-8
(x+5/2)^2=-7/4

Hmmm. a perfect square cannot be a negative number, not in the real domain.
Algebra - djd, Wednesday, September 22, 2010 at 4:13pm
mememme

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