Respuesta :

Answer:

Let's solve the expressions step by step:

1. 4 x 5 - (2² - 2)

First, we need to calculate the value inside the parentheses:

2² = 2 x 2 = 4

Now we subtract 2 from 4:

4 - 2 = 2

Now we can substitute the value back into the original expression:

4 x 5 - 2 = 20 - 2 = 18

2. (18 ÷ 3) (3² - 7)

First, let's calculate the value inside the parentheses:

3² = 3 x 3 = 9

Now we subtract 7 from 9:

9 - 7 = 2

Now we can substitute the value back into the original expression:

18 ÷ 3 x 2 = 6 x 2 = 12

Therefore, the final result is:

4 x 5 - (2² - 2) = 18

(18 ÷ 3) (3² - 7) = 12