7x - 10xy + 3xy - 2x
7x - 2x - 10xy + 3xy
5x - 7xy
x(5 - 7y) "x" colocado em evidência.
x(5 - 7y)
...............
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7x - 10xy + 3xy - 2x
7x - 2x - 10xy + 3xy
5x - 7xy
x(5 - 7y) "x" colocado em evidência.
7x - 10xy + 3xy - 2x
7x - 2x - 10xy + 3xy
5x - 7xy
x(5 - 7y)
...............
Respondam a minha pergunta
https://br.answers.yahoo.com/question/index?qid=20...