Qual o resultado da expressão numérica a seguir?

5² - √8+56:2

A) 4

B) 7

C) 19

D) 26

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