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Mathematics 22 Online
OpenStudy (anonymous):

How does x^2-4x+3 factor into (x-1),(x-3)? I don't understand how my online homework program got this answer

OpenStudy (amistre64):

we can do trial and error .... but that can take awhile; what methods do you know of?

hero (hero):

x^2 - 4x + 3 x^2 - 3x -1x + 3 x(x-3)-1(x-3) (x-3)(x-1)

hero (hero):

That took about 45 secs

hero (hero):

and I'm a bad typer. Imagine using paper only

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