Question

Expression 1:

6 x 7 - 3² - 9 x 9 + 4³

Expression 2:

5 + (4² + 6 - 2²) -1

a. What is the value of Expression 1?

b. Insert parentheses in Expression 2 so that it has a value of 22. Then show why your expression has a value of 22.

c. Explain in full sentences how you know that with your parentheses that Expression 2 is equal to 22.

Answer 1

1. Did it mentally think it’s 16. Make sure to yield to order of operations.
2. Because none of the operations are multiplication or division, parenthesis can be put anywhere that isn’t between exponents and it will yield 22.