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A quadratic equation, or quadratic equation, is a polynomial equation with the highest degree equal to 2. It is represented in the general form: ax^2 + bx + c = 0, where a, b and c are constants and x is the variable unknown. There are three possible types of solutions for a quadratic equation: Two real and distinct roots: When the discriminant (∆) of the equation is greater than zero (∆ > 0), the equation has two different real roots. Two real and equal roots: When the discriminant is equal to zero (∆ = 0), the equation has two real roots that are equal, resulting in a unique solution.No real roots: When the discriminant is less than zero (∆ < 0 ), the equation has no real roots. In this case, the roots can be complex conjugate numbers.
A matemática para mim é uma matéria fascinante. Adoro desafios e na época de escola essa matéria da equação de segundo grau tive várias dificuldades, mais depois que aprendi, percebi que ela tem diversas aplicações em várias áreas da matemática e da ciência, sendo fundamental para resolver problemas e modelar fenômenos do mundo real. Vale apena aprender. - by Lúcia Mara, Brasil
