The name comes from quad meaning square as the variable is squared in other words x 2. There are different methods you can use to solve quadratic equations depending on your particular problem. -b b²-4ac 2a.
In algebra a quadratic equation from the Latin quadratus for square is any equation that can be rearranged in standard form as ax²bxc0 where x represents an unknown and a b and c represent known numbers where a 0.
You can calculate the discriminant b2 - 4ac first. It will find both the real and the imaginary complex roots. First we bring the equation to the form ax²bxc0 where a b and c are coefficients. X 8 8 2 4 1 5 2 1 x 8 64 20 2.