Precalculus (6th Edition) Blitzer

The product rule for exponents states that $b^{n}$$\times$$b^{m}$=$b^{n+m}$. When multiplying exponential expressions with the same base, the exponents are added together.
The product rule for exponents states that $b^{n}$$\times$$b^{m}$=$b^{n+m}$. When multiplying exponential expressions with the same base, the exponents are added together. For instance, $2^{2}$$\times$$2^{3}$=$2^{2+3}$=$2^{5}$