To find the value of 3² + 4² - 5², we first need to understand what each term means. The "^2" symbol means "squared," so 3² is equal to 3 multiplied by itself, or 9. Similarly, 4² is equal to 4 multiplied by itself, or 16. Finally, 5² is equal to 5 multiplied by itself, or 25.
So to solve the problem, we substitute these values into the original equation:
3² + 4² - 5² = 9 + 16 - 25
Now we can simplify by adding and subtracting the numbers:
9 + 16 = 25
25 - 25 = 0
So the final answer is 0.