Answer:
The answer is 19.
Step-by-step explanation:
We first need to calculate the powers, roots, products and divisions in the order they appear from left to right. For this expression we have:
5² - sqrt(8 + 56:2)
25 - sqrt(8 + 56:2)
25 - sqrt(8 + 28)
25 - sqrt(36)
25 - 6
Now we can calculate the sums and subtractions in the order they appear, from left to right:
25 - 6
19
The answer is 19
