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Mathematics 7 Online
OpenStudy (anonymous):

Check for any extraneous solutions.

OpenStudy (elonasushchik):

There can be two solutions. 1.) x =(-70-√2700)/50=(-7-3√ 3 )/5= -2.439 2.) x =(-70+√2700)/50=(-7+3√ 3 )/5= -0.361

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