To simplify $b^4 \cdot b^{10}$, we use the rule of exponents which states that when multiplying like bases, we add the exponents:

$b^4 \cdot b^{10} = b^{4+10} = b^{14}$

Thus, the simplified expression is $b^{14}$.

Would you like a detailed explanation on exponent rules or have any further questions?

Here are some related questions to explore:

1. How do you simplify expressions with different bases?
2. What are the properties of exponents for division?
3. How does raising a power to a power work?
4. Can you explain negative exponents and their meaning?
5. How do fractional exponents relate to roots?

Tip: When multiplying powers with the same base, always add the exponents.