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Mathematics 31 Online
OpenStudy (anonymous):

Factor completely: 9x^2 + 42x + 49

OpenStudy (anonymous):

Lol you have a lot of these don't you. You should look up a heuristic for them, and practice makes perfect (sometimes)

OpenStudy (anonymous):

not too many left just trying to check answers is all :)

Directrix (directrix):

Looks like the Perfect Square Trinomial pattern. (3x)^2 + 2 (3x)(7) + 7 ^2 = (3x + 7) (3x + 7)

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