5 + 4 • (8 — 6)2

Answer 1

To solve this expression, follow the order of operations (also known as PEMDAS):

First, simplify the parentheses:
8 - 6 = 2

Next, simplify the exponent:
2^2 = 4

Now, the expression becomes:
5 + 4 • 4

Next, do the multiplication:
4 • 4 = 16

Finally, do the addition:
5 + 16 = 21

Therefore, 5 + 4 • (8 - 6)^2 = 21.