Question

Insert parentheses as needed in the expression 5 + 8 * 2 - 1 to make the equation true. 5 + 8 * 2 - 1 = 25

Answer 1

What is (5+8)*2 -1 ?

Answer 2

after a few trials, there are only a few choices, you should see that
(5 + 8)*2 - 1 = 25