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Mathematics 8 Online
OpenStudy (hitaro9):

How to solve quadratic congruences?

OpenStudy (hitaro9):

For example x^2-6x+1 = 0 mod 31 When our professor did the problem in class they got x = 12, 13 But wolfram alpha says the solutions are 18 and 19 Who's wrong here? How do you got about this question?

OpenStudy (amistre64):

first off, we factor the quadratic ...

OpenStudy (amistre64):

or .... 0 mod 31 = 31n for any integer n x^2 -6x +1 = 31n x^2 -6x +(1-31n) = 0 think we can work that?

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