algebra

The solution for x =

x^2+14x-4=0

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  1. x = -14/2 +/- (1/2)sqrt( 196 +16)
    = -7 +/- (1/2) sqrt (212)
    but 212 = 4*53
    so
    -7 +/- sqrt(53)

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  2. Thank you

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