Final answer:
To simplify the expression d⁴d³, we need to add the exponents since the base is the same. The simplified expression is d⁷.
Step-by-step explanation:
To simplify the expression, we need to apply the rule of multiplying exponents with the same base. In this case, we have two terms: d⁴ and d³. Since they both have the same base 'd', we can add their exponents. Adding 4 and 3 gives us a new exponent of 7. Therefore, the simplified expression is d⁷.