SOLUTION: Factor completely. If a polynomial is prime, state this. -9 + 18x^2 +21

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Factor completely. If a polynomial is prime, state this. -9 + 18x^2 +21      Log On


   

Question 534063: Factor completely. If a polynomial is prime, state this.
-9 + 18x^2 +21
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
-9 + 18x^2 +21
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18x^2+12
Factor:
= 6(3x^2+2)