Greatest Common Factors of Monomials:

Anderson 5 Charter School    

Madison Parrish

12 Grade     

Friday,September,8th

My question is find the Greatest Common Factor of the following factors...

28b      30b^5

What I did was I got...

4*7*b for the 28b  then for the 30b^5 I got 5*6*B*B*B*B*B

But then I got...   B   I don't know what I did wrong I went and checked and got the same answer 

I need some help if you can help me please show me...Thank You