Equação do 2º Grau Parte IX: Resolução de Exercícios

Synopsis: In this lecture we present the solution of equations involving an exercise of the 2nd degree. In this exercise we initially used a technique known as "completing squares" to reduce the problem to solving some equations of the 2nd degree.
Source: Portal of Mathematics.
URL: http://matematica.obmep.org.br/index.php/modulo/ver?modulo=25#