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Mathematics 11 Online
OpenStudy (anonymous):

x^2-4x-21=0

OpenStudy (anonymous):

(x -7)(x+3) = 0

OpenStudy (anonymous):

Good, we know you can do it, but can you @cloey08 do it?

OpenStudy (anonymous):

how did you get that?

OpenStudy (anonymous):

|dw:1334519315650:dw|

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