Find least positive solution to the quadratic congruence (4x^2 + 7x +1)==0 (mod 11)

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The least positive residue was calculated for this quadratic expression with discriminant = 0. Was useful to calculate the multiplicative inverse modulo 11 of the value 8 in a manner comparable to presentation at Neso Academy. Do note that the discriminant equals to zero implies a Single solution

Number Theorist Charles Vanden Eynden made interesting comparison to illegal wiretapping and the way he proved a method to find all solutions to quadratic equations modulo a prime. Perhaps a truth seeking political activist during Watergate? Mathematician Jason S, Arizona referenced the number theorist's text book I believe.
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