Help me please. These are my last two problems

Answer:
9. 2ab =30
10.Ans;
[tex][ \frac{6}{b} ] ^{c} = 4[/tex]
Step-by-step explanation:
9. Ans;
[tex]2ab = 2(5)(3) = (10)(3) = 30 [/tex]
__o_o__
10. Ans;
[tex][ \frac{6}{b} ] ^{c} = [ \frac{6}{3} ] ^{2} \\ \\ = [ 2 ] ^{2} = 4[/tex]
I hope I helped you^_^