Final answer:
The expression with exponents to complete the equation 3^3 and 3^4 is 3^(3 * 4). When you have the same base number raised to different exponents, you can multiply the exponents together.
Step-by-step explanation:
The expression with exponents to complete the equation 3^3 and 3^4 is option d) 3^(3 * 4).
To solve this, we need to multiply the exponents of 3. In this case, the exponent of 3^3 is 3, and the exponent of 3^4 is 4. So when we multiply them, we get 3 * 4 = 12. Therefore, the expression is 3^12.
Remember that when you have the same base number raised to different exponents, you can multiply the exponents together to find the result.