Which law of exponents can be used to simplify this?

[Guest]

Ronnie invested P dollars in a two-year CD with an annual rate of return of r. After the CD rolled over three times, its value was P((1+r)^2)^3.

Which law of exponents can be used to simplify the expression? Simplify it.

 

[tkhunny]

\(\displaystyle \L\,(a^{m})^{n} = a^{m*n}\)