Equação do 2º Grau Parte III: Resolução de Exercícios

Synopsis: In this lecture we present the resolution of two exercises whose solution lies in the solution of an equation of the 2nd degree. The first step in solving these exercises is to translate the problem into a mathematical language. This process is also known as mathematical modeling.
Source: Portal of Mathematics.
URL: http://matematica.obmep.org.br/index.php/modulo/ver?modulo=25#