Final answer:
To evaluate 4^2 + 4^3, you need to simplify each exponentiation separately and then add the results together.
Step-by-step explanation:
To evaluate the expression 4^2 + 4^3, we begin by simplifying each exponentiation separately. 4^2 means 4 raised to the power of 2, which is 4 multiplied by itself: 4^2 = 4 × 4 = 16. Next, 4^3 means 4 raised to the power of 3, which is 4 multiplied by itself twice: 4^3 = 4 × 4 × 4 = 64. Finally, we add the results together: 16 + 64 = 80.