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Mathematics, 22.01.2021 06:50 ilovecatsomuchlolol

On a math test a student, Sarah, has to identify all the coefficients and constants of the expression 9n+b+2. Sarah says that 9 is a coefficient and 2 is a constant. Identify all the coefficients and constants of the expression. What error might Sarah have made? The coefficient(s) of the expression is/are
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