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Mathematics 24 Online
OpenStudy (anonymous):

Solve 2x2 - 8x = -7.

OpenStudy (anonymous):

@popitree

OpenStudy (anonymous):

-2 +- sqr2 -2 + 2 sqr 2 2 +- sqr 2 / 2 2 +- (sqr2/2)

OpenStudy (popitree):

|dw:1411660195399:dw|

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