SOLUTION: I am factoring by taking out the greatest common factor. How would i do this question? 12k^3+21k^5

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Question 86549: I am factoring by taking out the greatest common factor.
How would i do this question?
12k^3+21k^5
Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
GCF=3k^3
%2812k%5E3%2B21k%5E5%29 [divide each term by the GCF; place the GCF on the outside]
%283k%5E3%2812k%5E3%2F3k%5E3+%2B+21k%5E5%2F3k%5E3%29%29
%283k%5E3%284+%2B+7k%5E2%29%29