Question

I'm having trouble simplifying two problems with exponents. Please help. Thanks.

1. [(-2)^4]^3

2. 10^7 . -1/10

Answer 1

[(-2)^4]^3

= (-2)^12
= 4096

10^7 . -1/10
Is that dot supposed to be a multiplication sign?
if so, then

(10^7)( -1/10) = -10^6 = -1 000 000