Final answer:
When evaluating the expression 3a² + 4b² with a = 2 and b = 3, we substitute the values in and simplify to get 12 + 36, which equals 48.
Step-by-step explanation:
To evaluate the expression follow these steps:
1.Plug in the values:
2.Substitute
3. Perform the calculations:
To evaluate the expression 3a² + 4b² for a = 2 and b = 3, you substitute the values of a and b into the expression. So it becomes 3(2)² + 4(3)², which simplifies to 3(4) + 4(9). That further simplifies to 12 + 36, resulting in a total of 48.