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Home > INT2 > Chapter 9 > Lesson 9.3.3 > Problem 9-108


The number is the output for Carmen’s function machine shown at right. What number(s) could have been dropped in? 

Since is the output, set the expression inside of the function machine equal to .


Use the Zero Product Property: ,

Function Machine: Input, blank, Rule: Open parenthesis, x, minus 1, close parenthesis, squared, + 2. Output, blank.