SOLUTION: Factor the following expression 21x^6+18x^2 I found out what the GCF (greatest common factor) was but I can't remember what to do next. The GCF was 3x^2

Algebra ->  Equations -> SOLUTION: Factor the following expression 21x^6+18x^2 I found out what the GCF (greatest common factor) was but I can't remember what to do next. The GCF was 3x^2      Log On


   



Question 615622: Factor the following expression 21x^6+18x^2 I found out what the GCF (greatest common factor) was but I can't remember what to do next. The GCF was 3x^2
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
The first step in factoring a polynomial is "taking out the common factor" (if there is one).
Since 21x%5E6=%283x%5E2%29%2A%287x%5E4%29 and 18x%5E2=%283x%5E2%29%2A6
you can take out 3x%5E2 as a common factor:

There is no way you can factor 7x%5E4%2B6, so the factoring is complete.