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OpenStudy (anonymous):
A student is attempting to simplify the expression below. Sample mathematical work is shown. Which statement best applies to the sample mathematical work? Given 2003-01-05-00-00_files/i0340000.jpg, I first apply the distributive property, which yields the expression a + b – 2ab + 2a. I can then collect like terms: since a + 2a = 3a, I have the expression 3a + b – 2ab as my final answer.
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