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Mathematics 18 Online
OpenStudy (anonymous):

Solve 7x2 + 28x = 49 by completing the square.

OpenStudy (anonymous):

divide through by 7 first you have x2 + 4x - 7 = 0 next is add \[(x+2)^{2} -11 = 0\] then you should be able to the remainder yourself.

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