2. ana is given the image below and asked to write an algebraic expression to represent the volume of
the shape
she writes a? - b= (a - b)(a
+ ab - b). is ana correct?
a. ana is correct
b. ana is incorrect. the expression should be a
- b) = (a - b)(a? - ab - b? )
c. ana is incorrect. the expression should be a
- b3 = (a - b)(a
+ ab + b)
d. ana is incorrect. the expression should be a
- b3 = (a + b)(a
+ ab + b)