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2014-10-22T02:50:16+05:30

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The first student wrote as : 
              x² - (7+8) x + 7*8 = 0    so he found answers as 7 and 8.
Since he wrote constant term correctly, it means c = 56.

Another student wrote it as :  x² - (8-3) x - 3 * 8 = 0 
Since he wrote the coefficient of x correctly, it means b = - 5

The correct quadratic equation is x² - 5 x + 56 = 0

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