A 2 a 2 b 1 0. Quadratic equation in mathematics an algebraic equation of the second degree having one or more variables raised to the second power. An equation where the highest exponent of the variable usually x is a square 2.
A quadratic equation in Standard Form has three coefficients.
In algebra a quadratic equation is any equation that can be rearranged in standard form as a x 2 b x c 0 displaystyle ax2bxc0 where x represents an unknown and a b and c represent known numbers where a 0. In algebra a quadratic equation is any equation that can be rearranged in standard form as a x 2 b x c 0 displaystyle ax2bxc0 where x represents an unknown and a b and c represent known numbers where a 0. A quadratic equation has two solutions called roots. If a 0 then the equation is linear not quadratic as there is no a x 2 displaystyle ax2 term.